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Finding the Fourth Proportional to 487,529.70, 731,294.55 and 328,097.40

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Solution

The fourth proportional to 487,529.70, 731,294.55 and 328,097.40 is: 492,146.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,529.70 : 731,294.55 = 328,097.40 : x
  2. Step 2: Convert to fraction form
    487,529.70/731,294.55 = 328,097.40/x
  3. Step 3: Cross multiply
    487,529.70x = 731,294.55 × 328,097.40
  4. Step 4: Simplify right side
    487,529.70x = 239,935,840,489.17
  5. Step 5: Solve for x
    x = 239,935,840,489.17/487,529.70
  6. Step 6: Final answer
    x = 492,146.10

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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.