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Finding the Fourth Proportional to 528,042.92, 728,433.22 and 377,227.40

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Solution

The fourth proportional to 528,042.92, 728,433.22 and 377,227.40 is: 520,383.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,042.92 : 728,433.22 = 377,227.40 : x
  2. Step 2: Convert to fraction form
    528,042.92/728,433.22 = 377,227.40/x
  3. Step 3: Cross multiply
    528,042.92x = 728,433.22 × 377,227.40
  4. Step 4: Simplify right side
    528,042.92x = 274,784,969,654.23
  5. Step 5: Solve for x
    x = 274,784,969,654.23/528,042.92
  6. Step 6: Final answer
    x = 520,383.78

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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.