Home / 812,111.49-1,120,700.28-449,527.58

Finding the Fourth Proportional to 812,111.49, 1,120,700.28 and 449,527.58

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Solution

The fourth proportional to 812,111.49, 1,120,700.28 and 449,527.58 is: 620,340.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,111.49 : 1,120,700.28 = 449,527.58 : x
  2. Step 2: Convert to fraction form
    812,111.49/1,120,700.28 = 449,527.58/x
  3. Step 3: Cross multiply
    812,111.49x = 1,120,700.28 × 449,527.58
  4. Step 4: Simplify right side
    812,111.49x = 503,785,679,170.22
  5. Step 5: Solve for x
    x = 503,785,679,170.22/812,111.49
  6. Step 6: Final answer
    x = 620,340.54

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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.