Home / 811,645.48-1,217,634.24-279,097.30

Finding the Fourth Proportional to 811,645.48, 1,217,634.24 and 279,097.30

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Solution

The fourth proportional to 811,645.48, 1,217,634.24 and 279,097.30 is: 418,703.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,645.48 : 1,217,634.24 = 279,097.30 : x
  2. Step 2: Convert to fraction form
    811,645.48/1,217,634.24 = 279,097.30/x
  3. Step 3: Cross multiply
    811,645.48x = 1,217,634.24 × 279,097.30
  4. Step 4: Simplify right side
    811,645.48x = 339,838,428,771.55
  5. Step 5: Solve for x
    x = 339,838,428,771.55/811,645.48
  6. Step 6: Final answer
    x = 418,703.04

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Double scale
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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.