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Finding the Fourth Proportional to 807,674.40, 1,211,500.80 and 246,711.60

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Solution

The fourth proportional to 807,674.40, 1,211,500.80 and 246,711.60 is: 370,064.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    807,674.40 : 1,211,500.80 = 246,711.60 : x
  2. Step 2: Convert to fraction form
    807,674.40/1,211,500.80 = 246,711.60/x
  3. Step 3: Cross multiply
    807,674.40x = 1,211,500.80 × 246,711.60
  4. Step 4: Simplify right side
    807,674.40x = 298,891,300,769.28
  5. Step 5: Solve for x
    x = 298,891,300,769.28/807,674.40
  6. Step 6: Final answer
    x = 370,064.10

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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.