Home / 8,199,331.20-12,298,996.80-6,286,143.60

Finding the Fourth Proportional to 8,199,331.20, 12,298,996.80 and 6,286,143.60

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Solution

The fourth proportional to 8,199,331.20, 12,298,996.80 and 6,286,143.60 is: 9,429,215.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,199,331.20 : 12,298,996.80 = 6,286,143.60 : x
  2. Step 2: Convert to fraction form
    8,199,331.20/12,298,996.80 = 6,286,143.60/x
  3. Step 3: Cross multiply
    8,199,331.20x = 12,298,996.80 × 6,286,143.60
  4. Step 4: Simplify right side
    8,199,331.20x = 77,313,260,020,740.48
  5. Step 5: Solve for x
    x = 77,313,260,020,740.48/8,199,331.20
  6. Step 6: Final answer
    x = 9,429,215.40

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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.