Home / 766,128.44-1,057,247.24-421,957.82

Finding the Fourth Proportional to 766,128.44, 1,057,247.24 and 421,957.82

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Solution

The fourth proportional to 766,128.44, 1,057,247.24 and 421,957.82 is: 582,296.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    766,128.44 : 1,057,247.24 = 421,957.82 : x
  2. Step 2: Convert to fraction form
    766,128.44/1,057,247.24 = 421,957.82/x
  3. Step 3: Cross multiply
    766,128.44x = 1,057,247.24 × 421,957.82
  4. Step 4: Simplify right side
    766,128.44x = 446,113,740,591.42
  5. Step 5: Solve for x
    x = 446,113,740,591.42/766,128.44
  6. Step 6: Final answer
    x = 582,296.28

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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.