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Finding the Fourth Proportional to 539,648.66, 745,377.81 and 404,288.18

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Solution

The fourth proportional to 539,648.66, 745,377.81 and 404,288.18 is: 558,414.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,648.66 : 745,377.81 = 404,288.18 : x
  2. Step 2: Convert to fraction form
    539,648.66/745,377.81 = 404,288.18/x
  3. Step 3: Cross multiply
    539,648.66x = 745,377.81 × 404,288.18
  4. Step 4: Simplify right side
    539,648.66x = 301,347,438,217.29
  5. Step 5: Solve for x
    x = 301,347,438,217.29/539,648.66
  6. Step 6: Final answer
    x = 558,414.13

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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.