Home / 826,700.71-1,239,736.31-489,836.42

Finding the Fourth Proportional to 826,700.71, 1,239,736.31 and 489,836.42

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Solution

The fourth proportional to 826,700.71, 1,239,736.31 and 489,836.42 is: 734,568.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    826,700.71 : 1,239,736.31 = 489,836.42 : x
  2. Step 2: Convert to fraction form
    826,700.71/1,239,736.31 = 489,836.42/x
  3. Step 3: Cross multiply
    826,700.71x = 1,239,736.31 × 489,836.42
  4. Step 4: Simplify right side
    826,700.71x = 607,267,993,385.23
  5. Step 5: Solve for x
    x = 607,267,993,385.23/826,700.71
  6. Step 6: Final answer
    x = 734,568.13

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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.