Home / 8,220,724.40-12,331,086.60-7,884,801.20

Finding the Fourth Proportional to 8,220,724.40, 12,331,086.60 and 7,884,801.20

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Solution

The fourth proportional to 8,220,724.40, 12,331,086.60 and 7,884,801.20 is: 11,827,201.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,220,724.40 : 12,331,086.60 = 7,884,801.20 : x
  2. Step 2: Convert to fraction form
    8,220,724.40/12,331,086.60 = 7,884,801.20/x
  3. Step 3: Cross multiply
    8,220,724.40x = 12,331,086.60 × 7,884,801.20
  4. Step 4: Simplify right side
    8,220,724.40x = 97,228,166,420,983.92
  5. Step 5: Solve for x
    x = 97,228,166,420,983.92/8,220,724.40
  6. Step 6: Final answer
    x = 11,827,201.80

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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.