Home / 811,867.73-1,120,349.81-449,306.87

Finding the Fourth Proportional to 811,867.73, 1,120,349.81 and 449,306.87

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Solution

The fourth proportional to 811,867.73, 1,120,349.81 and 449,306.87 is: 620,028.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,867.73 : 1,120,349.81 = 449,306.87 : x
  2. Step 2: Convert to fraction form
    811,867.73/1,120,349.81 = 449,306.87/x
  3. Step 3: Cross multiply
    811,867.73x = 1,120,349.81 × 449,306.87
  4. Step 4: Simplify right side
    811,867.73x = 503,380,861,957.71
  5. Step 5: Solve for x
    x = 503,380,861,957.71/811,867.73
  6. Step 6: Final answer
    x = 620,028.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.