Home / 766,121.99-1,057,296.36-421,957.85

Finding the Fourth Proportional to 766,121.99, 1,057,296.36 and 421,957.85

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Solution

The fourth proportional to 766,121.99, 1,057,296.36 and 421,957.85 is: 582,328.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    766,121.99 : 1,057,296.36 = 421,957.85 : x
  2. Step 2: Convert to fraction form
    766,121.99/1,057,296.36 = 421,957.85/x
  3. Step 3: Cross multiply
    766,121.99x = 1,057,296.36 × 421,957.85
  4. Step 4: Simplify right side
    766,121.99x = 446,134,493,591.94
  5. Step 5: Solve for x
    x = 446,134,493,591.94/766,121.99
  6. Step 6: Final answer
    x = 582,328.27

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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.