Home / 721,738,698.24-996,008,958.72-391,717,793.28

Finding the Fourth Proportional to 721,738,698.24, 996,008,958.72 and 391,717,793.28

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Solution

The fourth proportional to 721,738,698.24, 996,008,958.72 and 391,717,793.28 is: 540,575,740.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,738,698.24 : 996,008,958.72 = 391,717,793.28 : x
  2. Step 2: Convert to fraction form
    721,738,698.24/996,008,958.72 = 391,717,793.28/x
  3. Step 3: Cross multiply
    721,738,698.24x = 996,008,958.72 × 391,717,793.28
  4. Step 4: Simplify right side
    721,738,698.24x = 390,154,431,396,908,992
  5. Step 5: Solve for x
    x = 390,154,431,396,908,992/721,738,698.24
  6. Step 6: Final answer
    x = 540,575,740.71

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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.