Home / 8,257,200.80-12,385,801.20-5,387,419.40

Finding the Fourth Proportional to 8,257,200.80, 12,385,801.20 and 5,387,419.40

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Solution

The fourth proportional to 8,257,200.80, 12,385,801.20 and 5,387,419.40 is: 8,081,129.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,257,200.80 : 12,385,801.20 = 5,387,419.40 : x
  2. Step 2: Convert to fraction form
    8,257,200.80/12,385,801.20 = 5,387,419.40/x
  3. Step 3: Cross multiply
    8,257,200.80x = 12,385,801.20 × 5,387,419.40
  4. Step 4: Simplify right side
    8,257,200.80x = 66,727,505,669,423.28
  5. Step 5: Solve for x
    x = 66,727,505,669,423.28/8,257,200.80
  6. Step 6: Final answer
    x = 8,081,129.10

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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.