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Finding the Fourth Proportional to 559,318.32, 771,871.20 and 304,668.96

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Solution

The fourth proportional to 559,318.32, 771,871.20 and 304,668.96 is: 420,449.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,318.32 : 771,871.20 = 304,668.96 : x
  2. Step 2: Convert to fraction form
    559,318.32/771,871.20 = 304,668.96/x
  3. Step 3: Cross multiply
    559,318.32x = 771,871.20 × 304,668.96
  4. Step 4: Simplify right side
    559,318.32x = 235,165,195,757.95
  5. Step 5: Solve for x
    x = 235,165,195,757.95/559,318.32
  6. Step 6: Final answer
    x = 420,449.66

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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.