Home / 837,121.80-1,255,682.70-304,660.20

Finding the Fourth Proportional to 837,121.80, 1,255,682.70 and 304,660.20

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Solution

The fourth proportional to 837,121.80, 1,255,682.70 and 304,660.20 is: 456,990.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    837,121.80 : 1,255,682.70 = 304,660.20 : x
  2. Step 2: Convert to fraction form
    837,121.80/1,255,682.70 = 304,660.20/x
  3. Step 3: Cross multiply
    837,121.80x = 1,255,682.70 × 304,660.20
  4. Step 4: Simplify right side
    837,121.80x = 382,556,542,518.54
  5. Step 5: Solve for x
    x = 382,556,542,518.54/837,121.80
  6. Step 6: Final answer
    x = 456,990.30

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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.