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Finding the Fourth Proportional to 698,107.80, 963,331.98 and 392,167.56

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Solution

The fourth proportional to 698,107.80, 963,331.98 and 392,167.56 is: 541,159.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    698,107.80 : 963,331.98 = 392,167.56 : x
  2. Step 2: Convert to fraction form
    698,107.80/963,331.98 = 392,167.56/x
  3. Step 3: Cross multiply
    698,107.80x = 963,331.98 × 392,167.56
  4. Step 4: Simplify right side
    698,107.80x = 377,787,552,066.57
  5. Step 5: Solve for x
    x = 377,787,552,066.57/698,107.80
  6. Step 6: Final answer
    x = 541,159.33

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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.