Home / 865,121.80-1,297,682.70-802,136.20

Finding the Fourth Proportional to 865,121.80, 1,297,682.70 and 802,136.20

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Solution

The fourth proportional to 865,121.80, 1,297,682.70 and 802,136.20 is: 1,203,204.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,121.80 : 1,297,682.70 = 802,136.20 : x
  2. Step 2: Convert to fraction form
    865,121.80/1,297,682.70 = 802,136.20/x
  3. Step 3: Cross multiply
    865,121.80x = 1,297,682.70 × 802,136.20
  4. Step 4: Simplify right side
    865,121.80x = 1,040,918,269,783.74
  5. Step 5: Solve for x
    x = 1,040,918,269,783.74/865,121.80
  6. Step 6: Final answer
    x = 1,203,204.30

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Double scale
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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.