Home / 489,298,220.52-675,373,829.61-319,777,959.78

Finding the Fourth Proportional to 489,298,220.52, 675,373,829.61 and 319,777,959.78

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Solution

The fourth proportional to 489,298,220.52, 675,373,829.61 and 319,777,959.78 is: 441,386,574.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,298,220.52 : 675,373,829.61 = 319,777,959.78 : x
  2. Step 2: Convert to fraction form
    489,298,220.52/675,373,829.61 = 319,777,959.78/x
  3. Step 3: Cross multiply
    489,298,220.52x = 675,373,829.61 × 319,777,959.78
  4. Step 4: Simplify right side
    489,298,220.52x = 215,969,665,321,491,136
  5. Step 5: Solve for x
    x = 215,969,665,321,491,136/489,298,220.52
  6. Step 6: Final answer
    x = 441,386,574.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.