Home / 812,041.12-1,120,588.14-449,465.68

Finding the Fourth Proportional to 812,041.12, 1,120,588.14 and 449,465.68

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Solution

The fourth proportional to 812,041.12, 1,120,588.14 and 449,465.68 is: 620,246.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,041.12 : 1,120,588.14 = 449,465.68 : x
  2. Step 2: Convert to fraction form
    812,041.12/1,120,588.14 = 449,465.68/x
  3. Step 3: Cross multiply
    812,041.12x = 1,120,588.14 × 449,465.68
  4. Step 4: Simplify right side
    812,041.12x = 503,665,910,345.04
  5. Step 5: Solve for x
    x = 503,665,910,345.04/812,041.12
  6. Step 6: Final answer
    x = 620,246.81

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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.