Home / 8,471,805.40-12,707,708.10-7,887,220.30

Finding the Fourth Proportional to 8,471,805.40, 12,707,708.10 and 7,887,220.30

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Solution

The fourth proportional to 8,471,805.40, 12,707,708.10 and 7,887,220.30 is: 11,830,830.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,471,805.40 : 12,707,708.10 = 7,887,220.30 : x
  2. Step 2: Convert to fraction form
    8,471,805.40/12,707,708.10 = 7,887,220.30/x
  3. Step 3: Cross multiply
    8,471,805.40x = 12,707,708.10 × 7,887,220.30
  4. Step 4: Simplify right side
    8,471,805.40x = 100,228,493,292,794.42
  5. Step 5: Solve for x
    x = 100,228,493,292,794.42/8,471,805.40
  6. Step 6: Final answer
    x = 11,830,830.45

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Double scale
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Similar ratio
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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.