Home / 815,040,932.40-1,222,690,034.34-348,705,378.45

Finding the Fourth Proportional to 815,040,932.40, 1,222,690,034.34 and 348,705,378.45

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Solution

The fourth proportional to 815,040,932.40, 1,222,690,034.34 and 348,705,378.45 is: 523,113,102.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,040,932.40 : 1,222,690,034.34 = 348,705,378.45 : x
  2. Step 2: Convert to fraction form
    815,040,932.40/1,222,690,034.34 = 348,705,378.45/x
  3. Step 3: Cross multiply
    815,040,932.40x = 1,222,690,034.34 × 348,705,378.45
  4. Step 4: Simplify right side
    815,040,932.40x = 426,358,591,151,573,120
  5. Step 5: Solve for x
    x = 426,358,591,151,573,120/815,040,932.40
  6. Step 6: Final answer
    x = 523,113,102.92

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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.