Home / 927,109,456.80-1,390,850,809.20-272,059,216.80

Finding the Fourth Proportional to 927,109,456.80, 1,390,850,809.20 and 272,059,216.80

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Solution

The fourth proportional to 927,109,456.80, 1,390,850,809.20 and 272,059,216.80 is: 408,143,589.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    927,109,456.80 : 1,390,850,809.20 = 272,059,216.80 : x
  2. Step 2: Convert to fraction form
    927,109,456.80/1,390,850,809.20 = 272,059,216.80/x
  3. Step 3: Cross multiply
    927,109,456.80x = 1,390,850,809.20 × 272,059,216.80
  4. Step 4: Simplify right side
    927,109,456.80x = 378,393,781,836,598,272
  5. Step 5: Solve for x
    x = 378,393,781,836,598,272/927,109,456.80
  6. Step 6: Final answer
    x = 408,143,589.80

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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.