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Finding the Fourth Proportional to 782,997.76, 1,080,612.30 and 438,832

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Solution

The fourth proportional to 782,997.76, 1,080,612.30 and 438,832 is: 605,630.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    782,997.76 : 1,080,612.30 = 438,832 : x
  2. Step 2: Convert to fraction form
    782,997.76/1,080,612.30 = 438,832/x
  3. Step 3: Cross multiply
    782,997.76x = 1,080,612.30 × 438,832
  4. Step 4: Simplify right side
    782,997.76x = 474,207,256,833.60
  5. Step 5: Solve for x
    x = 474,207,256,833.60/782,997.76
  6. Step 6: Final answer
    x = 605,630.41

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1.5x scale

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.