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Finding the Fourth Proportional to 539,421.78, 744,248.61 and 324,454.26

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Solution

The fourth proportional to 539,421.78, 744,248.61 and 324,454.26 is: 447,654.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,421.78 : 744,248.61 = 324,454.26 : x
  2. Step 2: Convert to fraction form
    539,421.78/744,248.61 = 324,454.26/x
  3. Step 3: Cross multiply
    539,421.78x = 744,248.61 × 324,454.26
  4. Step 4: Simplify right side
    539,421.78x = 241,474,632,013.58
  5. Step 5: Solve for x
    x = 241,474,632,013.58/539,421.78
  6. Step 6: Final answer
    x = 447,654.58

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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.