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Finding the Fourth Proportional to 6,643,934.60, 9,965,901.90 and 3,612,752.60

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Solution

The fourth proportional to 6,643,934.60, 9,965,901.90 and 3,612,752.60 is: 5,419,128.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,643,934.60 : 9,965,901.90 = 3,612,752.60 : x
  2. Step 2: Convert to fraction form
    6,643,934.60/9,965,901.90 = 3,612,752.60/x
  3. Step 3: Cross multiply
    6,643,934.60x = 9,965,901.90 × 3,612,752.60
  4. Step 4: Simplify right side
    6,643,934.60x = 36,004,338,000,569.95
  5. Step 5: Solve for x
    x = 36,004,338,000,569.95/6,643,934.60
  6. Step 6: Final answer
    x = 5,419,128.90

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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.