Home / 780,279.80-1,170,419.70-247,854.65

Finding the Fourth Proportional to 780,279.80, 1,170,419.70 and 247,854.65

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Solution

The fourth proportional to 780,279.80, 1,170,419.70 and 247,854.65 is: 371,781.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,279.80 : 1,170,419.70 = 247,854.65 : x
  2. Step 2: Convert to fraction form
    780,279.80/1,170,419.70 = 247,854.65/x
  3. Step 3: Cross multiply
    780,279.80x = 1,170,419.70 × 247,854.65
  4. Step 4: Simplify right side
    780,279.80x = 290,093,965,096.61
  5. Step 5: Solve for x
    x = 290,093,965,096.61/780,279.80
  6. Step 6: Final answer
    x = 371,781.98

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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.