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Finding the Fourth Proportional to 559,034.62, 771,481.65 and 304,399.78

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Solution

The fourth proportional to 559,034.62, 771,481.65 and 304,399.78 is: 420,079.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,034.62 : 771,481.65 = 304,399.78 : x
  2. Step 2: Convert to fraction form
    559,034.62/771,481.65 = 304,399.78/x
  3. Step 3: Cross multiply
    559,034.62x = 771,481.65 × 304,399.78
  4. Step 4: Simplify right side
    559,034.62x = 234,838,844,534.04
  5. Step 5: Solve for x
    x = 234,838,844,534.04/559,034.62
  6. Step 6: Final answer
    x = 420,079.25

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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.