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Finding the Fourth Proportional to 610,069.60, 915,622.80 and 491,874.40

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Solution

The fourth proportional to 610,069.60, 915,622.80 and 491,874.40 is: 738,229.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,069.60 : 915,622.80 = 491,874.40 : x
  2. Step 2: Convert to fraction form
    610,069.60/915,622.80 = 491,874.40/x
  3. Step 3: Cross multiply
    610,069.60x = 915,622.80 × 491,874.40
  4. Step 4: Simplify right side
    610,069.60x = 450,371,415,376.32
  5. Step 5: Solve for x
    x = 450,371,415,376.32/610,069.60
  6. Step 6: Final answer
    x = 738,229.56

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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.