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Finding the Fourth Proportional to 545,577.87, 817,841.91 and 279,463.71

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Solution

The fourth proportional to 545,577.87, 817,841.91 and 279,463.71 is: 418,926.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,577.87 : 817,841.91 = 279,463.71 : x
  2. Step 2: Convert to fraction form
    545,577.87/817,841.91 = 279,463.71/x
  3. Step 3: Cross multiply
    545,577.87x = 817,841.91 × 279,463.71
  4. Step 4: Simplify right side
    545,577.87x = 228,557,134,362.09
  5. Step 5: Solve for x
    x = 228,557,134,362.09/545,577.87
  6. Step 6: Final answer
    x = 418,926.70

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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.