Home / 865,121.40-1,297,779.30-266,077.80

Finding the Fourth Proportional to 865,121.40, 1,297,779.30 and 266,077.80

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Solution

The fourth proportional to 865,121.40, 1,297,779.30 and 266,077.80 is: 399,146.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,121.40 : 1,297,779.30 = 266,077.80 : x
  2. Step 2: Convert to fraction form
    865,121.40/1,297,779.30 = 266,077.80/x
  3. Step 3: Cross multiply
    865,121.40x = 1,297,779.30 × 266,077.80
  4. Step 4: Simplify right side
    865,121.40x = 345,310,261,029.54
  5. Step 5: Solve for x
    x = 345,310,261,029.54/865,121.40
  6. Step 6: Final answer
    x = 399,146.59

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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.