Home / 2,588,928,012.20-3,883,392,018.30-865,641,996.20

Finding the Fourth Proportional to 2,588,928,012.20, 3,883,392,018.30 and 865,641,996.20

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Solution

The fourth proportional to 2,588,928,012.20, 3,883,392,018.30 and 865,641,996.20 is: 1,298,462,994.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,588,928,012.20 : 3,883,392,018.30 = 865,641,996.20 : x
  2. Step 2: Convert to fraction form
    2,588,928,012.20/3,883,392,018.30 = 865,641,996.20/x
  3. Step 3: Cross multiply
    2,588,928,012.20x = 3,883,392,018.30 × 865,641,996.20
  4. Step 4: Simplify right side
    2,588,928,012.20x = 3,361,627,218,748,359,168
  5. Step 5: Solve for x
    x = 3,361,627,218,748,359,168/2,588,928,012.20
  6. Step 6: Final answer
    x = 1,298,462,994.30

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Half scale
Find fourth proportional to 5,177,856,024.40, 7,766,784,036.60 and 1,731,283,992.40
Double scale
Find fourth proportional to 2,588,928,013.20, 3,883,392,019.80 and 865,641,997.20
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.