Home / 1,215,230.80-1,822,846.20-860,645.20

Finding the Fourth Proportional to 1,215,230.80, 1,822,846.20 and 860,645.20

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Solution

The fourth proportional to 1,215,230.80, 1,822,846.20 and 860,645.20 is: 1,290,967.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,215,230.80 : 1,822,846.20 = 860,645.20 : x
  2. Step 2: Convert to fraction form
    1,215,230.80/1,822,846.20 = 860,645.20/x
  3. Step 3: Cross multiply
    1,215,230.80x = 1,822,846.20 × 860,645.20
  4. Step 4: Simplify right side
    1,215,230.80x = 1,568,823,832,368.24
  5. Step 5: Solve for x
    x = 1,568,823,832,368.24/1,215,230.80
  6. Step 6: Final answer
    x = 1,290,967.80

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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.