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Finding the Fourth Proportional to 674,348.90, 930,665.86 and 368,471.78

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Solution

The fourth proportional to 674,348.90, 930,665.86 and 368,471.78 is: 508,526.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,348.90 : 930,665.86 = 368,471.78 : x
  2. Step 2: Convert to fraction form
    674,348.90/930,665.86 = 368,471.78/x
  3. Step 3: Cross multiply
    674,348.90x = 930,665.86 × 368,471.78
  4. Step 4: Simplify right side
    674,348.90x = 342,924,106,019.43
  5. Step 5: Solve for x
    x = 342,924,106,019.43/674,348.90
  6. Step 6: Final answer
    x = 508,526.23

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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.