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Finding the Fourth Proportional to 543,796.80, 815,695.20 and 455,223.30

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Solution

The fourth proportional to 543,796.80, 815,695.20 and 455,223.30 is: 682,834.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,796.80 : 815,695.20 = 455,223.30 : x
  2. Step 2: Convert to fraction form
    543,796.80/815,695.20 = 455,223.30/x
  3. Step 3: Cross multiply
    543,796.80x = 815,695.20 × 455,223.30
  4. Step 4: Simplify right side
    543,796.80x = 371,323,460,738.16
  5. Step 5: Solve for x
    x = 371,323,460,738.16/543,796.80
  6. Step 6: Final answer
    x = 682,834.95

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Similar ratio
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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.