Home / 811,654.26-1,217,647.45-279,106.13

Finding the Fourth Proportional to 811,654.26, 1,217,647.45 and 279,106.13

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Solution

The fourth proportional to 811,654.26, 1,217,647.45 and 279,106.13 is: 418,716.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,654.26 : 1,217,647.45 = 279,106.13 : x
  2. Step 2: Convert to fraction form
    811,654.26/1,217,647.45 = 279,106.13/x
  3. Step 3: Cross multiply
    811,654.26x = 1,217,647.45 × 279,106.13
  4. Step 4: Simplify right side
    811,654.26x = 339,852,862,447.63
  5. Step 5: Solve for x
    x = 339,852,862,447.63/811,654.26
  6. Step 6: Final answer
    x = 418,716.29

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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.