Home / 665,478,742.72-998,708,451.36-315,726,082.24

Finding the Fourth Proportional to 665,478,742.72, 998,708,451.36 and 315,726,082.24

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Solution

The fourth proportional to 665,478,742.72, 998,708,451.36 and 315,726,082.24 is: 473,821,756.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,478,742.72 : 998,708,451.36 = 315,726,082.24 : x
  2. Step 2: Convert to fraction form
    665,478,742.72/998,708,451.36 = 315,726,082.24/x
  3. Step 3: Cross multiply
    665,478,742.72x = 998,708,451.36 × 315,726,082.24
  4. Step 4: Simplify right side
    665,478,742.72x = 315,318,306,647,870,400
  5. Step 5: Solve for x
    x = 315,318,306,647,870,400/665,478,742.72
  6. Step 6: Final answer
    x = 473,821,756.29

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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.