Home / 487,531.20-731,296.80-328,098.90

Finding the Fourth Proportional to 487,531.20, 731,296.80 and 328,098.90

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Solution

The fourth proportional to 487,531.20, 731,296.80 and 328,098.90 is: 492,148.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,531.20 : 731,296.80 = 328,098.90 : x
  2. Step 2: Convert to fraction form
    487,531.20/731,296.80 = 328,098.90/x
  3. Step 3: Cross multiply
    487,531.20x = 731,296.80 × 328,098.90
  4. Step 4: Simplify right side
    487,531.20x = 239,937,675,653.52
  5. Step 5: Solve for x
    x = 239,937,675,653.52/487,531.20
  6. Step 6: Final answer
    x = 492,148.35

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Similar ratio
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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.