Home / 392,023,772.70-588,051,887.40-115,674,981.42

Finding the Fourth Proportional to 392,023,772.70, 588,051,887.40 and 115,674,981.42

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Solution

The fourth proportional to 392,023,772.70, 588,051,887.40 and 115,674,981.42 is: 173,517,260.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,023,772.70 : 588,051,887.40 = 115,674,981.42 : x
  2. Step 2: Convert to fraction form
    392,023,772.70/588,051,887.40 = 115,674,981.42/x
  3. Step 3: Cross multiply
    392,023,772.70x = 588,051,887.40 × 115,674,981.42
  4. Step 4: Simplify right side
    392,023,772.70x = 68,022,891,148,990,928
  5. Step 5: Solve for x
    x = 68,022,891,148,990,928/392,023,772.70
  6. Step 6: Final answer
    x = 173,517,260.65

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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.