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Finding the Fourth Proportional to 675,474.10, 932,161.12 and 369,543.78

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Solution

The fourth proportional to 675,474.10, 932,161.12 and 369,543.78 is: 509,974.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    675,474.10 : 932,161.12 = 369,543.78 : x
  2. Step 2: Convert to fraction form
    675,474.10/932,161.12 = 369,543.78/x
  3. Step 3: Cross multiply
    675,474.10x = 932,161.12 × 369,543.78
  4. Step 4: Simplify right side
    675,474.10x = 344,474,346,839.18
  5. Step 5: Solve for x
    x = 344,474,346,839.18/675,474.10
  6. Step 6: Final answer
    x = 509,974.18

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1.5x scale

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.