Home / 819,982.95-1,229,982.67-287,516.79

Finding the Fourth Proportional to 819,982.95, 1,229,982.67 and 287,516.79

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Solution

The fourth proportional to 819,982.95, 1,229,982.67 and 287,516.79 is: 431,278.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,982.95 : 1,229,982.67 = 287,516.79 : x
  2. Step 2: Convert to fraction form
    819,982.95/1,229,982.67 = 287,516.79/x
  3. Step 3: Cross multiply
    819,982.95x = 1,229,982.67 × 287,516.79
  4. Step 4: Simplify right side
    819,982.95x = 353,640,669,393.43
  5. Step 5: Solve for x
    x = 353,640,669,393.43/819,982.95
  6. Step 6: Final answer
    x = 431,278.08

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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.