Home / 811,708.76-1,120,062.12-449,084.72

Finding the Fourth Proportional to 811,708.76, 1,120,062.12 and 449,084.72

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Solution

The fourth proportional to 811,708.76, 1,120,062.12 and 449,084.72 is: 619,683.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,708.76 : 1,120,062.12 = 449,084.72 : x
  2. Step 2: Convert to fraction form
    811,708.76/1,120,062.12 = 449,084.72/x
  3. Step 3: Cross multiply
    811,708.76x = 1,120,062.12 × 449,084.72
  4. Step 4: Simplify right side
    811,708.76x = 503,002,783,542.81
  5. Step 5: Solve for x
    x = 503,002,783,542.81/811,708.76
  6. Step 6: Final answer
    x = 619,683.82

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Double scale
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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.