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Finding the Fourth Proportional to 8,768,572.80, 13,138,862.40 and 7,340,899.20

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Solution

The fourth proportional to 8,768,572.80, 13,138,862.40 and 7,340,899.20 is: 10,999,630.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,768,572.80 : 13,138,862.40 = 7,340,899.20 : x
  2. Step 2: Convert to fraction form
    8,768,572.80/13,138,862.40 = 7,340,899.20/x
  3. Step 3: Cross multiply
    8,768,572.80x = 13,138,862.40 × 7,340,899.20
  4. Step 4: Simplify right side
    8,768,572.80x = 96,451,064,481,070.08
  5. Step 5: Solve for x
    x = 96,451,064,481,070.08/8,768,572.80
  6. Step 6: Final answer
    x = 10,999,630.92

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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.