Home / 816,734.31-1,126,633.73-489,960.38

Finding the Fourth Proportional to 816,734.31, 1,126,633.73 and 489,960.38

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Solution

The fourth proportional to 816,734.31, 1,126,633.73 and 489,960.38 is: 675,869.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    816,734.31 : 1,126,633.73 = 489,960.38 : x
  2. Step 2: Convert to fraction form
    816,734.31/1,126,633.73 = 489,960.38/x
  3. Step 3: Cross multiply
    816,734.31x = 1,126,633.73 × 489,960.38
  4. Step 4: Simplify right side
    816,734.31x = 552,005,882,388.65
  5. Step 5: Solve for x
    x = 552,005,882,388.65/816,734.31
  6. Step 6: Final answer
    x = 675,869.59

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.