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Finding the Fourth Proportional to 625,940.48, 938,604.53 and 436,491.61

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Solution

The fourth proportional to 625,940.48, 938,604.53 and 436,491.61 is: 654,523.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,940.48 : 938,604.53 = 436,491.61 : x
  2. Step 2: Convert to fraction form
    625,940.48/938,604.53 = 436,491.61/x
  3. Step 3: Cross multiply
    625,940.48x = 938,604.53 × 436,491.61
  4. Step 4: Simplify right side
    625,940.48x = 409,693,001,197.71
  5. Step 5: Solve for x
    x = 409,693,001,197.71/625,940.48
  6. Step 6: Final answer
    x = 654,523.89

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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.