Home / 862,500.80-1,293,751.20-663,204.80

Finding the Fourth Proportional to 862,500.80, 1,293,751.20 and 663,204.80

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Solution

The fourth proportional to 862,500.80, 1,293,751.20 and 663,204.80 is: 994,807.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    862,500.80 : 1,293,751.20 = 663,204.80 : x
  2. Step 2: Convert to fraction form
    862,500.80/1,293,751.20 = 663,204.80/x
  3. Step 3: Cross multiply
    862,500.80x = 1,293,751.20 × 663,204.80
  4. Step 4: Simplify right side
    862,500.80x = 858,022,005,845.76
  5. Step 5: Solve for x
    x = 858,022,005,845.76/862,500.80
  6. Step 6: Final answer
    x = 994,807.20

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Double scale
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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.