Home / 8,279,664.80-12,419,497.20-7,817,770.40

Finding the Fourth Proportional to 8,279,664.80, 12,419,497.20 and 7,817,770.40

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Solution

The fourth proportional to 8,279,664.80, 12,419,497.20 and 7,817,770.40 is: 11,726,655.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,279,664.80 : 12,419,497.20 = 7,817,770.40 : x
  2. Step 2: Convert to fraction form
    8,279,664.80/12,419,497.20 = 7,817,770.40/x
  3. Step 3: Cross multiply
    8,279,664.80x = 12,419,497.20 × 7,817,770.40
  4. Step 4: Simplify right side
    8,279,664.80x = 97,092,777,593,042.88
  5. Step 5: Solve for x
    x = 97,092,777,593,042.88/8,279,664.80
  6. Step 6: Final answer
    x = 11,726,655.60

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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.