Home / 865,145.68-1,297,721.56-266,102.80

Finding the Fourth Proportional to 865,145.68, 1,297,721.56 and 266,102.80

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Solution

The fourth proportional to 865,145.68, 1,297,721.56 and 266,102.80 is: 399,155.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,145.68 : 1,297,721.56 = 266,102.80 : x
  2. Step 2: Convert to fraction form
    865,145.68/1,297,721.56 = 266,102.80/x
  3. Step 3: Cross multiply
    865,145.68x = 1,297,721.56 × 266,102.80
  4. Step 4: Simplify right side
    865,145.68x = 345,327,340,736.37
  5. Step 5: Solve for x
    x = 345,327,340,736.37/865,145.68
  6. Step 6: Final answer
    x = 399,155.14

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.