Home / 424,096,986.80-636,145,480.20-343,475,418.80

Finding the Fourth Proportional to 424,096,986.80, 636,145,480.20 and 343,475,418.80

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Solution

The fourth proportional to 424,096,986.80, 636,145,480.20 and 343,475,418.80 is: 515,213,128.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,096,986.80 : 636,145,480.20 = 343,475,418.80 : x
  2. Step 2: Convert to fraction form
    424,096,986.80/636,145,480.20 = 343,475,418.80/x
  3. Step 3: Cross multiply
    424,096,986.80x = 636,145,480.20 × 343,475,418.80
  4. Step 4: Simplify right side
    424,096,986.80x = 218,500,335,229,422,144
  5. Step 5: Solve for x
    x = 218,500,335,229,422,144/424,096,986.80
  6. Step 6: Final answer
    x = 515,213,128.20

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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.