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Finding the Fourth Proportional to 539,726.78, 744,819.75 and 298,007.39

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Solution

The fourth proportional to 539,726.78, 744,819.75 and 298,007.39 is: 411,248.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,726.78 : 744,819.75 = 298,007.39 : x
  2. Step 2: Convert to fraction form
    539,726.78/744,819.75 = 298,007.39/x
  3. Step 3: Cross multiply
    539,726.78x = 744,819.75 × 298,007.39
  4. Step 4: Simplify right side
    539,726.78x = 221,961,785,993.85
  5. Step 5: Solve for x
    x = 221,961,785,993.85/539,726.78
  6. Step 6: Final answer
    x = 411,248.42

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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.