Home / 391,445,261.74-587,396,855.13-145,971,482.86

Finding the Fourth Proportional to 391,445,261.74, 587,396,855.13 and 145,971,482.86

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Solution

The fourth proportional to 391,445,261.74, 587,396,855.13 and 145,971,482.86 is: 219,042,605.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,445,261.74 : 587,396,855.13 = 145,971,482.86 : x
  2. Step 2: Convert to fraction form
    391,445,261.74/587,396,855.13 = 145,971,482.86/x
  3. Step 3: Cross multiply
    391,445,261.74x = 587,396,855.13 × 145,971,482.86
  4. Step 4: Simplify right side
    391,445,261.74x = 85,743,189,970,626,704
  5. Step 5: Solve for x
    x = 85,743,189,970,626,704/391,445,261.74
  6. Step 6: Final answer
    x = 219,042,605.32

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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.