Home / 8,278,974.20-12,418,461.30-7,887,063.80

Finding the Fourth Proportional to 8,278,974.20, 12,418,461.30 and 7,887,063.80

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Solution

The fourth proportional to 8,278,974.20, 12,418,461.30 and 7,887,063.80 is: 11,830,595.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,278,974.20 : 12,418,461.30 = 7,887,063.80 : x
  2. Step 2: Convert to fraction form
    8,278,974.20/12,418,461.30 = 7,887,063.80/x
  3. Step 3: Cross multiply
    8,278,974.20x = 12,418,461.30 × 7,887,063.80
  4. Step 4: Simplify right side
    8,278,974.20x = 97,945,196,570,930.94
  5. Step 5: Solve for x
    x = 97,945,196,570,930.94/8,278,974.20
  6. Step 6: Final answer
    x = 11,830,595.70

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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.