Home / 812,700.14-1,121,544.83-445,212.38

Finding the Fourth Proportional to 812,700.14, 1,121,544.83 and 445,212.38

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Solution

The fourth proportional to 812,700.14, 1,121,544.83 and 445,212.38 is: 614,403.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,700.14 : 1,121,544.83 = 445,212.38 : x
  2. Step 2: Convert to fraction form
    812,700.14/1,121,544.83 = 445,212.38/x
  3. Step 3: Cross multiply
    812,700.14x = 1,121,544.83 × 445,212.38
  4. Step 4: Simplify right side
    812,700.14x = 499,325,646,957.89
  5. Step 5: Solve for x
    x = 499,325,646,957.89/812,700.14
  6. Step 6: Final answer
    x = 614,403.30

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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.