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Finding the Fourth Proportional to 521,107.57, 780,854.28 and 361,493.92

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Solution

The fourth proportional to 521,107.57, 780,854.28 and 361,493.92 is: 541,681.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,107.57 : 780,854.28 = 361,493.92 : x
  2. Step 2: Convert to fraction form
    521,107.57/780,854.28 = 361,493.92/x
  3. Step 3: Cross multiply
    521,107.57x = 780,854.28 × 361,493.92
  4. Step 4: Simplify right side
    521,107.57x = 282,274,074,625.98
  5. Step 5: Solve for x
    x = 282,274,074,625.98/521,107.57
  6. Step 6: Final answer
    x = 541,681.01

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.