Home / 398,944,458.80-598,416,688.20-389,986,506.80

Finding the Fourth Proportional to 398,944,458.80, 598,416,688.20 and 389,986,506.80

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Solution

The fourth proportional to 398,944,458.80, 598,416,688.20 and 389,986,506.80 is: 584,979,760.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,944,458.80 : 598,416,688.20 = 389,986,506.80 : x
  2. Step 2: Convert to fraction form
    398,944,458.80/598,416,688.20 = 389,986,506.80/x
  3. Step 3: Cross multiply
    398,944,458.80x = 598,416,688.20 × 389,986,506.80
  4. Step 4: Simplify right side
    398,944,458.80x = 233,374,433,841,942,816
  5. Step 5: Solve for x
    x = 233,374,433,841,942,816/398,944,458.80
  6. Step 6: Final answer
    x = 584,979,760.20

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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.