Home / 8,712,658.20-13,068,987.30-5,120,146.20

Finding the Fourth Proportional to 8,712,658.20, 13,068,987.30 and 5,120,146.20

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Solution

The fourth proportional to 8,712,658.20, 13,068,987.30 and 5,120,146.20 is: 7,680,219.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,712,658.20 : 13,068,987.30 = 5,120,146.20 : x
  2. Step 2: Convert to fraction form
    8,712,658.20/13,068,987.30 = 5,120,146.20/x
  3. Step 3: Cross multiply
    8,712,658.20x = 13,068,987.30 × 5,120,146.20
  4. Step 4: Simplify right side
    8,712,658.20x = 66,915,125,661,943.27
  5. Step 5: Solve for x
    x = 66,915,125,661,943.27/8,712,658.20
  6. Step 6: Final answer
    x = 7,680,219.30

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Double scale
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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.