Home / 781,479,750.49-1,171,970,750.57-256,727,046.31

Finding the Fourth Proportional to 781,479,750.49, 1,171,970,750.57 and 256,727,046.31

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Solution

The fourth proportional to 781,479,750.49, 1,171,970,750.57 and 256,727,046.31 is: 385,008,810.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,479,750.49 : 1,171,970,750.57 = 256,727,046.31 : x
  2. Step 2: Convert to fraction form
    781,479,750.49/1,171,970,750.57 = 256,727,046.31/x
  3. Step 3: Cross multiply
    781,479,750.49x = 1,171,970,750.57 × 256,727,046.31
  4. Step 4: Simplify right side
    781,479,750.49x = 300,876,589,151,336,320
  5. Step 5: Solve for x
    x = 300,876,589,151,336,320/781,479,750.49
  6. Step 6: Final answer
    x = 385,008,810.48

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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.