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Finding the Fourth Proportional to 7,991,752.61, 11,990,648.79 and 4,799,104.40

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Solution

The fourth proportional to 7,991,752.61, 11,990,648.79 and 4,799,104.40 is: 7,200,470.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,991,752.61 : 11,990,648.79 = 4,799,104.40 : x
  2. Step 2: Convert to fraction form
    7,991,752.61/11,990,648.79 = 4,799,104.40/x
  3. Step 3: Cross multiply
    7,991,752.61x = 11,990,648.79 × 4,799,104.40
  4. Step 4: Simplify right side
    7,991,752.61x = 57,544,375,354,945.91
  5. Step 5: Solve for x
    x = 57,544,375,354,945.91/7,991,752.61
  6. Step 6: Final answer
    x = 7,200,470.05

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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.