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Finding the Fourth Proportional to 547,432.54, 755,449.33 and 318,119.38

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Solution

The fourth proportional to 547,432.54, 755,449.33 and 318,119.38 is: 439,000.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,432.54 : 755,449.33 = 318,119.38 : x
  2. Step 2: Convert to fraction form
    547,432.54/755,449.33 = 318,119.38/x
  3. Step 3: Cross multiply
    547,432.54x = 755,449.33 × 318,119.38
  4. Step 4: Simplify right side
    547,432.54x = 240,323,072,481.02
  5. Step 5: Solve for x
    x = 240,323,072,481.02/547,432.54
  6. Step 6: Final answer
    x = 439,000.34

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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.