Home / 766,136.38-1,057,258.26-421,965.76

Finding the Fourth Proportional to 766,136.38, 1,057,258.26 and 421,965.76

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Solution

The fourth proportional to 766,136.38, 1,057,258.26 and 421,965.76 is: 582,307.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    766,136.38 : 1,057,258.26 = 421,965.76 : x
  2. Step 2: Convert to fraction form
    766,136.38/1,057,258.26 = 421,965.76/x
  3. Step 3: Cross multiply
    766,136.38x = 1,057,258.26 × 421,965.76
  4. Step 4: Simplify right side
    766,136.38x = 446,126,785,197.18
  5. Step 5: Solve for x
    x = 446,126,785,197.18/766,136.38
  6. Step 6: Final answer
    x = 582,307.27

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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.