Home / 391,026,989.40-539,557,259.10-225,982,685.40

Finding the Fourth Proportional to 391,026,989.40, 539,557,259.10 and 225,982,685.40

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Solution

The fourth proportional to 391,026,989.40, 539,557,259.10 and 225,982,685.40 is: 311,821,438.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,026,989.40 : 539,557,259.10 = 225,982,685.40 : x
  2. Step 2: Convert to fraction form
    391,026,989.40/539,557,259.10 = 225,982,685.40/x
  3. Step 3: Cross multiply
    391,026,989.40x = 539,557,259.10 × 225,982,685.40
  4. Step 4: Simplify right side
    391,026,989.40x = 121,930,598,338,481,600
  5. Step 5: Solve for x
    x = 121,930,598,338,481,600/391,026,989.40
  6. Step 6: Final answer
    x = 311,821,438.53

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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.