Home / 811,617.61-1,217,414.10-279,143.25

Finding the Fourth Proportional to 811,617.61, 1,217,414.10 and 279,143.25

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Solution

The fourth proportional to 811,617.61, 1,217,414.10 and 279,143.25 is: 418,710.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,617.61 : 1,217,414.10 = 279,143.25 : x
  2. Step 2: Convert to fraction form
    811,617.61/1,217,414.10 = 279,143.25/x
  3. Step 3: Cross multiply
    811,617.61x = 1,217,414.10 × 279,143.25
  4. Step 4: Simplify right side
    811,617.61x = 339,832,928,469.83
  5. Step 5: Solve for x
    x = 339,832,928,469.83/811,617.61
  6. Step 6: Final answer
    x = 418,710.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.