Home / 2,588,928,011.70-3,883,392,017.55-865,641,995.70

Finding the Fourth Proportional to 2,588,928,011.70, 3,883,392,017.55 and 865,641,995.70

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Solution

The fourth proportional to 2,588,928,011.70, 3,883,392,017.55 and 865,641,995.70 is: 1,298,462,993.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,588,928,011.70 : 3,883,392,017.55 = 865,641,995.70 : x
  2. Step 2: Convert to fraction form
    2,588,928,011.70/3,883,392,017.55 = 865,641,995.70/x
  3. Step 3: Cross multiply
    2,588,928,011.70x = 3,883,392,017.55 × 865,641,995.70
  4. Step 4: Simplify right side
    2,588,928,011.70x = 3,361,627,216,157,431,808
  5. Step 5: Solve for x
    x = 3,361,627,216,157,431,808/2,588,928,011.70
  6. Step 6: Final answer
    x = 1,298,462,993.55

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Half scale
Find fourth proportional to 5,177,856,023.40, 7,766,784,035.10 and 1,731,283,991.40
Double scale
Find fourth proportional to 2,588,928,012.70, 3,883,392,019.05 and 865,641,996.70
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.