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Finding the Fourth Proportional to 558,959.74, 771,339.96 and 304,310.86

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Solution

The fourth proportional to 558,959.74, 771,339.96 and 304,310.86 is: 419,935.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,959.74 : 771,339.96 = 304,310.86 : x
  2. Step 2: Convert to fraction form
    558,959.74/771,339.96 = 304,310.86/x
  3. Step 3: Cross multiply
    558,959.74x = 771,339.96 × 304,310.86
  4. Step 4: Simplify right side
    558,959.74x = 234,727,126,579.97
  5. Step 5: Solve for x
    x = 234,727,126,579.97/558,959.74
  6. Step 6: Final answer
    x = 419,935.66

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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.