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Finding the Fourth Proportional to 545,577.90, 817,841.91 and 279,463.74

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Solution

The fourth proportional to 545,577.90, 817,841.91 and 279,463.74 is: 418,926.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,577.90 : 817,841.91 = 279,463.74 : x
  2. Step 2: Convert to fraction form
    545,577.90/817,841.91 = 279,463.74/x
  3. Step 3: Cross multiply
    545,577.90x = 817,841.91 × 279,463.74
  4. Step 4: Simplify right side
    545,577.90x = 228,557,158,897.34
  5. Step 5: Solve for x
    x = 228,557,158,897.34/545,577.90
  6. Step 6: Final answer
    x = 418,926.72

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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.