Home / 862,821.40-1,294,232.10-442,917.40

Finding the Fourth Proportional to 862,821.40, 1,294,232.10 and 442,917.40

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Solution

The fourth proportional to 862,821.40, 1,294,232.10 and 442,917.40 is: 664,376.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    862,821.40 : 1,294,232.10 = 442,917.40 : x
  2. Step 2: Convert to fraction form
    862,821.40/1,294,232.10 = 442,917.40/x
  3. Step 3: Cross multiply
    862,821.40x = 1,294,232.10 × 442,917.40
  4. Step 4: Simplify right side
    862,821.40x = 573,237,916,728.54
  5. Step 5: Solve for x
    x = 573,237,916,728.54/862,821.40
  6. Step 6: Final answer
    x = 664,376.10

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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.