Home / 862,816.60-1,294,224.90-442,912.60

Finding the Fourth Proportional to 862,816.60, 1,294,224.90 and 442,912.60

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Solution

The fourth proportional to 862,816.60, 1,294,224.90 and 442,912.60 is: 664,368.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    862,816.60 : 1,294,224.90 = 442,912.60 : x
  2. Step 2: Convert to fraction form
    862,816.60/1,294,224.90 = 442,912.60/x
  3. Step 3: Cross multiply
    862,816.60x = 1,294,224.90 × 442,912.60
  4. Step 4: Simplify right side
    862,816.60x = 573,228,515,443.74
  5. Step 5: Solve for x
    x = 573,228,515,443.74/862,816.60
  6. Step 6: Final answer
    x = 664,368.90

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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.