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Finding the Fourth Proportional to 9,659,885.80, 14,489,828.70 and 8,929,978.60

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Solution

The fourth proportional to 9,659,885.80, 14,489,828.70 and 8,929,978.60 is: 13,394,967.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,659,885.80 : 14,489,828.70 = 8,929,978.60 : x
  2. Step 2: Convert to fraction form
    9,659,885.80/14,489,828.70 = 8,929,978.60/x
  3. Step 3: Cross multiply
    9,659,885.80x = 14,489,828.70 × 8,929,978.60
  4. Step 4: Simplify right side
    9,659,885.80x = 129,393,860,208,665.81
  5. Step 5: Solve for x
    x = 129,393,860,208,665.81/9,659,885.80
  6. Step 6: Final answer
    x = 13,394,967.90

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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.