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Finding the Fourth Proportional to 831,879.20, 1,247,818.80 and 333,600.80

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Solution

The fourth proportional to 831,879.20, 1,247,818.80 and 333,600.80 is: 500,401.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,879.20 : 1,247,818.80 = 333,600.80 : x
  2. Step 2: Convert to fraction form
    831,879.20/1,247,818.80 = 333,600.80/x
  3. Step 3: Cross multiply
    831,879.20x = 1,247,818.80 × 333,600.80
  4. Step 4: Simplify right side
    831,879.20x = 416,273,349,935.04
  5. Step 5: Solve for x
    x = 416,273,349,935.04/831,879.20
  6. Step 6: Final answer
    x = 500,401.20

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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.