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Finding the Fourth Proportional to 539,442.88, 744,711.12 and 394,085.56

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Solution

The fourth proportional to 539,442.88, 744,711.12 and 394,085.56 is: 544,042.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,442.88 : 744,711.12 = 394,085.56 : x
  2. Step 2: Convert to fraction form
    539,442.88/744,711.12 = 394,085.56/x
  3. Step 3: Cross multiply
    539,442.88x = 744,711.12 × 394,085.56
  4. Step 4: Simplify right side
    539,442.88x = 293,479,898,763.43
  5. Step 5: Solve for x
    x = 293,479,898,763.43/539,442.88
  6. Step 6: Final answer
    x = 544,042.58

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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.