Home / 665,478,743.72-998,708,452.86-315,726,083.24

Finding the Fourth Proportional to 665,478,743.72, 998,708,452.86 and 315,726,083.24

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Solution

The fourth proportional to 665,478,743.72, 998,708,452.86 and 315,726,083.24 is: 473,821,757.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,478,743.72 : 998,708,452.86 = 315,726,083.24 : x
  2. Step 2: Convert to fraction form
    665,478,743.72/998,708,452.86 = 315,726,083.24/x
  3. Step 3: Cross multiply
    665,478,743.72x = 998,708,452.86 × 315,726,083.24
  4. Step 4: Simplify right side
    665,478,743.72x = 315,318,308,120,168,000
  5. Step 5: Solve for x
    x = 315,318,308,120,168,000/665,478,743.72
  6. Step 6: Final answer
    x = 473,821,757.79

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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.