Home / 398,990,761.20-598,486,141.80-262,829,890.80

Finding the Fourth Proportional to 398,990,761.20, 598,486,141.80 and 262,829,890.80

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Solution

The fourth proportional to 398,990,761.20, 598,486,141.80 and 262,829,890.80 is: 394,244,836.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,990,761.20 : 598,486,141.80 = 262,829,890.80 : x
  2. Step 2: Convert to fraction form
    398,990,761.20/598,486,141.80 = 262,829,890.80/x
  3. Step 3: Cross multiply
    398,990,761.20x = 598,486,141.80 × 262,829,890.80
  4. Step 4: Simplify right side
    398,990,761.20x = 157,300,047,294,607,296
  5. Step 5: Solve for x
    x = 157,300,047,294,607,296/398,990,761.20
  6. Step 6: Final answer
    x = 394,244,836.20

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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.