Home / 880,164.20-1,321,121.10-431,391.80

Finding the Fourth Proportional to 880,164.20, 1,321,121.10 and 431,391.80

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Solution

The fourth proportional to 880,164.20, 1,321,121.10 and 431,391.80 is: 647,516.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    880,164.20 : 1,321,121.10 = 431,391.80 : x
  2. Step 2: Convert to fraction form
    880,164.20/1,321,121.10 = 431,391.80/x
  3. Step 3: Cross multiply
    880,164.20x = 1,321,121.10 × 431,391.80
  4. Step 4: Simplify right side
    880,164.20x = 569,920,809,346.98
  5. Step 5: Solve for x
    x = 569,920,809,346.98/880,164.20
  6. Step 6: Final answer
    x = 647,516.46

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Double scale
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1.5x scale

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.