Home / 816,644.13-1,224,962.09-209,429.72

Finding the Fourth Proportional to 816,644.13, 1,224,962.09 and 209,429.72

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Solution

The fourth proportional to 816,644.13, 1,224,962.09 and 209,429.72 is: 314,143.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    816,644.13 : 1,224,962.09 = 209,429.72 : x
  2. Step 2: Convert to fraction form
    816,644.13/1,224,962.09 = 209,429.72/x
  3. Step 3: Cross multiply
    816,644.13x = 1,224,962.09 × 209,429.72
  4. Step 4: Simplify right side
    816,644.13x = 256,543,465,726.33
  5. Step 5: Solve for x
    x = 256,543,465,726.33/816,644.13
  6. Step 6: Final answer
    x = 314,143.53

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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.