Home / 1,383,849,971.94-1,909,711,727.51-781,147,456.73

Finding the Fourth Proportional to 1,383,849,971.94, 1,909,711,727.51 and 781,147,456.73

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Solution

The fourth proportional to 1,383,849,971.94, 1,909,711,727.51 and 781,147,456.73 is: 1,077,982,793.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,383,849,971.94 : 1,909,711,727.51 = 781,147,456.73 : x
  2. Step 2: Convert to fraction form
    1,383,849,971.94/1,909,711,727.51 = 781,147,456.73/x
  3. Step 3: Cross multiply
    1,383,849,971.94x = 1,909,711,727.51 × 781,147,456.73
  4. Step 4: Simplify right side
    1,383,849,971.94x = 1,491,766,459,036,350,208
  5. Step 5: Solve for x
    x = 1,491,766,459,036,350,208/1,383,849,971.94
  6. Step 6: Final answer
    x = 1,077,982,793.86

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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.