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Finding the Fourth Proportional to 8,502,646.80, 12,754,067.40 and 2,112,913.20

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Solution

The fourth proportional to 8,502,646.80, 12,754,067.40 and 2,112,913.20 is: 3,169,393.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,502,646.80 : 12,754,067.40 = 2,112,913.20 : x
  2. Step 2: Convert to fraction form
    8,502,646.80/12,754,067.40 = 2,112,913.20/x
  3. Step 3: Cross multiply
    8,502,646.80x = 12,754,067.40 × 2,112,913.20
  4. Step 4: Simplify right side
    8,502,646.80x = 26,948,237,363,149.68
  5. Step 5: Solve for x
    x = 26,948,237,363,149.68/8,502,646.80
  6. Step 6: Final answer
    x = 3,169,393.95

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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.