Home / 812,347.59-1,218,638.03-279,725.61

Finding the Fourth Proportional to 812,347.59, 1,218,638.03 and 279,725.61

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Solution

The fourth proportional to 812,347.59, 1,218,638.03 and 279,725.61 is: 419,628.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,347.59 : 1,218,638.03 = 279,725.61 : x
  2. Step 2: Convert to fraction form
    812,347.59/1,218,638.03 = 279,725.61/x
  3. Step 3: Cross multiply
    812,347.59x = 1,218,638.03 × 279,725.61
  4. Step 4: Simplify right side
    812,347.59x = 340,884,266,310.95
  5. Step 5: Solve for x
    x = 340,884,266,310.95/812,347.59
  6. Step 6: Final answer
    x = 419,628.58

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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.