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Finding the Fourth Proportional to 557,871.80, 836,807.70 and 389,910.20

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Solution

The fourth proportional to 557,871.80, 836,807.70 and 389,910.20 is: 584,865.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,871.80 : 836,807.70 = 389,910.20 : x
  2. Step 2: Convert to fraction form
    557,871.80/836,807.70 = 389,910.20/x
  3. Step 3: Cross multiply
    557,871.80x = 836,807.70 × 389,910.20
  4. Step 4: Simplify right side
    557,871.80x = 326,279,857,668.54
  5. Step 5: Solve for x
    x = 326,279,857,668.54/557,871.80
  6. Step 6: Final answer
    x = 584,865.30

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Similar ratio
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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.