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Finding the Fourth Proportional to 542,747.20, 748,125.98 and 427,838.56

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Solution

The fourth proportional to 542,747.20, 748,125.98 and 427,838.56 is: 589,735.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,747.20 : 748,125.98 = 427,838.56 : x
  2. Step 2: Convert to fraction form
    542,747.20/748,125.98 = 427,838.56/x
  3. Step 3: Cross multiply
    542,747.20x = 748,125.98 × 427,838.56
  4. Step 4: Simplify right side
    542,747.20x = 320,077,141,981.79
  5. Step 5: Solve for x
    x = 320,077,141,981.79/542,747.20
  6. Step 6: Final answer
    x = 589,735.22

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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.