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Finding the Fourth Proportional to 8,857,009.30, 13,285,513.95 and 5,665,738.90

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Solution

The fourth proportional to 8,857,009.30, 13,285,513.95 and 5,665,738.90 is: 8,498,608.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,857,009.30 : 13,285,513.95 = 5,665,738.90 : x
  2. Step 2: Convert to fraction form
    8,857,009.30/13,285,513.95 = 5,665,738.90/x
  3. Step 3: Cross multiply
    8,857,009.30x = 13,285,513.95 × 5,665,738.90
  4. Step 4: Simplify right side
    8,857,009.30x = 75,272,253,193,007.66
  5. Step 5: Solve for x
    x = 75,272,253,193,007.66/8,857,009.30
  6. Step 6: Final answer
    x = 8,498,608.35

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Double scale
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Similar ratio
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1.5x scale

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.