Home / 811,650.60-1,217,177.82-279,020.52

Finding the Fourth Proportional to 811,650.60, 1,217,177.82 and 279,020.52

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Solution

The fourth proportional to 811,650.60, 1,217,177.82 and 279,020.52 is: 418,428.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,650.60 : 1,217,177.82 = 279,020.52 : x
  2. Step 2: Convert to fraction form
    811,650.60/1,217,177.82 = 279,020.52/x
  3. Step 3: Cross multiply
    811,650.60x = 1,217,177.82 × 279,020.52
  4. Step 4: Simplify right side
    811,650.60x = 339,617,588,268.87
  5. Step 5: Solve for x
    x = 339,617,588,268.87/811,650.60
  6. Step 6: Final answer
    x = 418,428.31

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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.