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Finding the Fourth Proportional to 659,882.50, 910,640.28 and 358,076.50

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Solution

The fourth proportional to 659,882.50, 910,640.28 and 358,076.50 is: 494,146.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,882.50 : 910,640.28 = 358,076.50 : x
  2. Step 2: Convert to fraction form
    659,882.50/910,640.28 = 358,076.50/x
  3. Step 3: Cross multiply
    659,882.50x = 910,640.28 × 358,076.50
  4. Step 4: Simplify right side
    659,882.50x = 326,078,884,221.42
  5. Step 5: Solve for x
    x = 326,078,884,221.42/659,882.50
  6. Step 6: Final answer
    x = 494,146.89

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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.