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Finding the Fourth Proportional to 711,617.52, 981,692.88 and 439,587.48

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Solution

The fourth proportional to 711,617.52, 981,692.88 and 439,587.48 is: 606,421.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,617.52 : 981,692.88 = 439,587.48 : x
  2. Step 2: Convert to fraction form
    711,617.52/981,692.88 = 439,587.48/x
  3. Step 3: Cross multiply
    711,617.52x = 981,692.88 × 439,587.48
  4. Step 4: Simplify right side
    711,617.52x = 431,539,899,253.14
  5. Step 5: Solve for x
    x = 431,539,899,253.14/711,617.52
  6. Step 6: Final answer
    x = 606,421.13

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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.