Home / 812,098.31-1,218,210.33-272,357.64

Finding the Fourth Proportional to 812,098.31, 1,218,210.33 and 272,357.64

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Solution

The fourth proportional to 812,098.31, 1,218,210.33 and 272,357.64 is: 408,557.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,098.31 : 1,218,210.33 = 272,357.64 : x
  2. Step 2: Convert to fraction form
    812,098.31/1,218,210.33 = 272,357.64/x
  3. Step 3: Cross multiply
    812,098.31x = 1,218,210.33 × 272,357.64
  4. Step 4: Simplify right side
    812,098.31x = 331,788,891,523.76
  5. Step 5: Solve for x
    x = 331,788,891,523.76/812,098.31
  6. Step 6: Final answer
    x = 408,557.55

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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.