Home / 1,381,556.70-2,072,335.05-820,302.30

Finding the Fourth Proportional to 1,381,556.70, 2,072,335.05 and 820,302.30

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Solution

The fourth proportional to 1,381,556.70, 2,072,335.05 and 820,302.30 is: 1,230,453.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,381,556.70 : 2,072,335.05 = 820,302.30 : x
  2. Step 2: Convert to fraction form
    1,381,556.70/2,072,335.05 = 820,302.30/x
  3. Step 3: Cross multiply
    1,381,556.70x = 2,072,335.05 × 820,302.30
  4. Step 4: Simplify right side
    1,381,556.70x = 1,699,941,207,885.62
  5. Step 5: Solve for x
    x = 1,699,941,207,885.62/1,381,556.70
  6. Step 6: Final answer
    x = 1,230,453.45

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Double scale
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Similar ratio
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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.