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Finding the Fourth Proportional to 659,616.35, 910,838.69 and 415,008.95

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Solution

The fourth proportional to 659,616.35, 910,838.69 and 415,008.95 is: 573,069.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,616.35 : 910,838.69 = 415,008.95 : x
  2. Step 2: Convert to fraction form
    659,616.35/910,838.69 = 415,008.95/x
  3. Step 3: Cross multiply
    659,616.35x = 910,838.69 × 415,008.95
  4. Step 4: Simplify right side
    659,616.35x = 378,006,204,839.60
  5. Step 5: Solve for x
    x = 378,006,204,839.60/659,616.35
  6. Step 6: Final answer
    x = 573,069.79

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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.