Home / 820,171.30-1,231,569.15-620,716.90

Finding the Fourth Proportional to 820,171.30, 1,231,569.15 and 620,716.90

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Solution

The fourth proportional to 820,171.30, 1,231,569.15 and 620,716.90 is: 932,068.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,171.30 : 1,231,569.15 = 620,716.90 : x
  2. Step 2: Convert to fraction form
    820,171.30/1,231,569.15 = 620,716.90/x
  3. Step 3: Cross multiply
    820,171.30x = 1,231,569.15 × 620,716.90
  4. Step 4: Simplify right side
    820,171.30x = 764,455,784,923.64
  5. Step 5: Solve for x
    x = 764,455,784,923.64/820,171.30
  6. Step 6: Final answer
    x = 932,068.44

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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.