Home / 938,815,760.43-1,407,649,684.28-447,679,245.87

Finding the Fourth Proportional to 938,815,760.43, 1,407,649,684.28 and 447,679,245.87

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Solution

The fourth proportional to 938,815,760.43, 1,407,649,684.28 and 447,679,245.87 is: 671,245,174.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    938,815,760.43 : 1,407,649,684.28 = 447,679,245.87 : x
  2. Step 2: Convert to fraction form
    938,815,760.43/1,407,649,684.28 = 447,679,245.87/x
  3. Step 3: Cross multiply
    938,815,760.43x = 1,407,649,684.28 × 447,679,245.87
  4. Step 4: Simplify right side
    938,815,760.43x = 630,175,549,105,375,616
  5. Step 5: Solve for x
    x = 630,175,549,105,375,616/938,815,760.43
  6. Step 6: Final answer
    x = 671,245,174.68

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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.