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Finding the Fourth Proportional to 9,659,798.80, 14,489,698.20 and 8,929,891.60

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Solution

The fourth proportional to 9,659,798.80, 14,489,698.20 and 8,929,891.60 is: 13,394,837.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,659,798.80 : 14,489,698.20 = 8,929,891.60 : x
  2. Step 2: Convert to fraction form
    9,659,798.80/14,489,698.20 = 8,929,891.60/x
  3. Step 3: Cross multiply
    9,659,798.80x = 14,489,698.20 × 8,929,891.60
  4. Step 4: Simplify right side
    9,659,798.80x = 129,391,434,242,715.11
  5. Step 5: Solve for x
    x = 129,391,434,242,715.11/9,659,798.80
  6. Step 6: Final answer
    x = 13,394,837.40

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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.