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Finding the Fourth Proportional to 456,401.20, 684,601.80 and 449,402.80

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Solution

The fourth proportional to 456,401.20, 684,601.80 and 449,402.80 is: 674,104.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,401.20 : 684,601.80 = 449,402.80 : x
  2. Step 2: Convert to fraction form
    456,401.20/684,601.80 = 449,402.80/x
  3. Step 3: Cross multiply
    456,401.20x = 684,601.80 × 449,402.80
  4. Step 4: Simplify right side
    456,401.20x = 307,661,965,805.04
  5. Step 5: Solve for x
    x = 307,661,965,805.04/456,401.20
  6. Step 6: Final answer
    x = 674,104.20

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Similar ratio
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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.