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Finding the Fourth Proportional to 8,668,879.80, 12,984,657.30 and 7,175,887.80

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Solution

The fourth proportional to 8,668,879.80, 12,984,657.30 and 7,175,887.80 is: 10,748,383.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,668,879.80 : 12,984,657.30 = 7,175,887.80 : x
  2. Step 2: Convert to fraction form
    8,668,879.80/12,984,657.30 = 7,175,887.80/x
  3. Step 3: Cross multiply
    8,668,879.80x = 12,984,657.30 × 7,175,887.80
  4. Step 4: Simplify right side
    8,668,879.80x = 93,176,443,906,250.94
  5. Step 5: Solve for x
    x = 93,176,443,906,250.94/8,668,879.80
  6. Step 6: Final answer
    x = 10,748,383.42

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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.