Home / 1,107,218,133.60-1,660,827,200.40-646,919,368.80

Finding the Fourth Proportional to 1,107,218,133.60, 1,660,827,200.40 and 646,919,368.80

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Solution

The fourth proportional to 1,107,218,133.60, 1,660,827,200.40 and 646,919,368.80 is: 970,379,053.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,107,218,133.60 : 1,660,827,200.40 = 646,919,368.80 : x
  2. Step 2: Convert to fraction form
    1,107,218,133.60/1,660,827,200.40 = 646,919,368.80/x
  3. Step 3: Cross multiply
    1,107,218,133.60x = 1,660,827,200.40 × 646,919,368.80
  4. Step 4: Simplify right side
    1,107,218,133.60x = 1,074,421,284,168,639,104
  5. Step 5: Solve for x
    x = 1,074,421,284,168,639,104/1,107,218,133.60
  6. Step 6: Final answer
    x = 970,379,053.20

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Half scale
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Double scale
Find fourth proportional to 1,107,218,134.60, 1,660,827,201.90 and 646,919,369.80
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.