Home / 876,279.40-1,314,419.10-343,817.80

Finding the Fourth Proportional to 876,279.40, 1,314,419.10 and 343,817.80

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Solution

The fourth proportional to 876,279.40, 1,314,419.10 and 343,817.80 is: 515,726.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,279.40 : 1,314,419.10 = 343,817.80 : x
  2. Step 2: Convert to fraction form
    876,279.40/1,314,419.10 = 343,817.80/x
  3. Step 3: Cross multiply
    876,279.40x = 1,314,419.10 × 343,817.80
  4. Step 4: Simplify right side
    876,279.40x = 451,920,683,239.98
  5. Step 5: Solve for x
    x = 451,920,683,239.98/876,279.40
  6. Step 6: Final answer
    x = 515,726.70

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Double scale
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Similar ratio
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1.5x scale

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.