Home / 398,944,356.30-598,416,534.45-389,986,404.30

Finding the Fourth Proportional to 398,944,356.30, 598,416,534.45 and 389,986,404.30

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Solution

The fourth proportional to 398,944,356.30, 598,416,534.45 and 389,986,404.30 is: 584,979,606.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,944,356.30 : 598,416,534.45 = 389,986,404.30 : x
  2. Step 2: Convert to fraction form
    398,944,356.30/598,416,534.45 = 389,986,404.30/x
  3. Step 3: Cross multiply
    398,944,356.30x = 598,416,534.45 × 389,986,404.30
  4. Step 4: Simplify right side
    398,944,356.30x = 233,374,312,543,822,592
  5. Step 5: Solve for x
    x = 233,374,312,543,822,592/398,944,356.30
  6. Step 6: Final answer
    x = 584,979,606.45

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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.