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Finding the Fourth Proportional to 498,285.45, 747,428.18 and 478,602.45

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Solution

The fourth proportional to 498,285.45, 747,428.18 and 478,602.45 is: 717,903.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,285.45 : 747,428.18 = 478,602.45 : x
  2. Step 2: Convert to fraction form
    498,285.45/747,428.18 = 478,602.45/x
  3. Step 3: Cross multiply
    498,285.45x = 747,428.18 × 478,602.45
  4. Step 4: Simplify right side
    498,285.45x = 357,720,955,754.03
  5. Step 5: Solve for x
    x = 357,720,955,754.03/498,285.45
  6. Step 6: Final answer
    x = 717,903.68

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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.