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Finding the Fourth Proportional to 529,989.38, 731,318.92 and 358,280.94

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Solution

The fourth proportional to 529,989.38, 731,318.92 and 358,280.94 is: 494,382.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,989.38 : 731,318.92 = 358,280.94 : x
  2. Step 2: Convert to fraction form
    529,989.38/731,318.92 = 358,280.94/x
  3. Step 3: Cross multiply
    529,989.38x = 731,318.92 × 358,280.94
  4. Step 4: Simplify right side
    529,989.38x = 262,017,630,097.39
  5. Step 5: Solve for x
    x = 262,017,630,097.39/529,989.38
  6. Step 6: Final answer
    x = 494,382.79

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.