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Finding the Fourth Proportional to 1,215,843.03, 1,823,385.47 and 457,789.95

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Solution

The fourth proportional to 1,215,843.03, 1,823,385.47 and 457,789.95 is: 686,542.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,215,843.03 : 1,823,385.47 = 457,789.95 : x
  2. Step 2: Convert to fraction form
    1,215,843.03/1,823,385.47 = 457,789.95/x
  3. Step 3: Cross multiply
    1,215,843.03x = 1,823,385.47 × 457,789.95
  4. Step 4: Simplify right side
    1,215,843.03x = 834,727,540,853.08
  5. Step 5: Solve for x
    x = 834,727,540,853.08/1,215,843.03
  6. Step 6: Final answer
    x = 686,542.19

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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.