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Finding the Fourth Proportional to 479,361,391.61, 661,518,862.13 and 270,561,765.65

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Solution

The fourth proportional to 479,361,391.61, 661,518,862.13 and 270,561,765.65 is: 373,375,316.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,361,391.61 : 661,518,862.13 = 270,561,765.65 : x
  2. Step 2: Convert to fraction form
    479,361,391.61/661,518,862.13 = 270,561,765.65/x
  3. Step 3: Cross multiply
    479,361,391.61x = 661,518,862.13 × 270,561,765.65
  4. Step 4: Simplify right side
    479,361,391.61x = 178,981,711,346,040,544
  5. Step 5: Solve for x
    x = 178,981,711,346,040,544/479,361,391.61
  6. Step 6: Final answer
    x = 373,375,316.58

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.