Home / 766,121.94-1,057,238.28-421,951.32

Finding the Fourth Proportional to 766,121.94, 1,057,238.28 and 421,951.32

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Solution

The fourth proportional to 766,121.94, 1,057,238.28 and 421,951.32 is: 582,287.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    766,121.94 : 1,057,238.28 = 421,951.32 : x
  2. Step 2: Convert to fraction form
    766,121.94/1,057,238.28 = 421,951.32/x
  3. Step 3: Cross multiply
    766,121.94x = 1,057,238.28 × 421,951.32
  4. Step 4: Simplify right side
    766,121.94x = 446,103,087,800.53
  5. Step 5: Solve for x
    x = 446,103,087,800.53/766,121.94
  6. Step 6: Final answer
    x = 582,287.32

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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.