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Finding the Fourth Proportional to 641,937.93, 885,863.52 and 355,451.87

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Solution

The fourth proportional to 641,937.93, 885,863.52 and 355,451.87 is: 490,517.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,937.93 : 885,863.52 = 355,451.87 : x
  2. Step 2: Convert to fraction form
    641,937.93/885,863.52 = 355,451.87/x
  3. Step 3: Cross multiply
    641,937.93x = 885,863.52 × 355,451.87
  4. Step 4: Simplify right side
    641,937.93x = 314,881,840,982.48
  5. Step 5: Solve for x
    x = 314,881,840,982.48/641,937.93
  6. Step 6: Final answer
    x = 490,517.58

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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.