Home / 766,136.16-1,057,267.23-421,974.42

Finding the Fourth Proportional to 766,136.16, 1,057,267.23 and 421,974.42

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Solution

The fourth proportional to 766,136.16, 1,057,267.23 and 421,974.42 is: 582,324.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    766,136.16 : 1,057,267.23 = 421,974.42 : x
  2. Step 2: Convert to fraction form
    766,136.16/1,057,267.23 = 421,974.42/x
  3. Step 3: Cross multiply
    766,136.16x = 1,057,267.23 × 421,974.42
  4. Step 4: Simplify right side
    766,136.16x = 446,139,726,164.26
  5. Step 5: Solve for x
    x = 446,139,726,164.26/766,136.16
  6. Step 6: Final answer
    x = 582,324.33

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Double scale
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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.