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Finding the Fourth Proportional to 602,753.20, 905,166.60 and 426,497.20

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Solution

The fourth proportional to 602,753.20, 905,166.60 and 426,497.20 is: 640,479.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    602,753.20 : 905,166.60 = 426,497.20 : x
  2. Step 2: Convert to fraction form
    602,753.20/905,166.60 = 426,497.20/x
  3. Step 3: Cross multiply
    602,753.20x = 905,166.60 × 426,497.20
  4. Step 4: Simplify right side
    602,753.20x = 386,051,020,433.52
  5. Step 5: Solve for x
    x = 386,051,020,433.52/602,753.20
  6. Step 6: Final answer
    x = 640,479.42

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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.