Home / 722,302,382.68-996,783,145.59-392,279,883.64

Finding the Fourth Proportional to 722,302,382.68, 996,783,145.59 and 392,279,883.64

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Solution

The fourth proportional to 722,302,382.68, 996,783,145.59 and 392,279,883.64 is: 541,349,420.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,302,382.68 : 996,783,145.59 = 392,279,883.64 : x
  2. Step 2: Convert to fraction form
    722,302,382.68/996,783,145.59 = 392,279,883.64/x
  3. Step 3: Cross multiply
    722,302,382.68x = 996,783,145.59 × 392,279,883.64
  4. Step 4: Simplify right side
    722,302,382.68x = 391,017,976,366,358,400
  5. Step 5: Solve for x
    x = 391,017,976,366,358,400/722,302,382.68
  6. Step 6: Final answer
    x = 541,349,420.61

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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.