Home / 8,220,755.40-12,331,133.10-7,884,832.20

Finding the Fourth Proportional to 8,220,755.40, 12,331,133.10 and 7,884,832.20

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Solution

The fourth proportional to 8,220,755.40, 12,331,133.10 and 7,884,832.20 is: 11,827,248.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,220,755.40 : 12,331,133.10 = 7,884,832.20 : x
  2. Step 2: Convert to fraction form
    8,220,755.40/12,331,133.10 = 7,884,832.20/x
  3. Step 3: Cross multiply
    8,220,755.40x = 12,331,133.10 × 7,884,832.20
  4. Step 4: Simplify right side
    8,220,755.40x = 97,228,915,329,365.81
  5. Step 5: Solve for x
    x = 97,228,915,329,365.81/8,220,755.40
  6. Step 6: Final answer
    x = 11,827,248.30

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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.