Home / 826,738.80-1,240,109.10-328,102.80

Finding the Fourth Proportional to 826,738.80, 1,240,109.10 and 328,102.80

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Solution

The fourth proportional to 826,738.80, 1,240,109.10 and 328,102.80 is: 492,154.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    826,738.80 : 1,240,109.10 = 328,102.80 : x
  2. Step 2: Convert to fraction form
    826,738.80/1,240,109.10 = 328,102.80/x
  3. Step 3: Cross multiply
    826,738.80x = 1,240,109.10 × 328,102.80
  4. Step 4: Simplify right side
    826,738.80x = 406,883,268,015.48
  5. Step 5: Solve for x
    x = 406,883,268,015.48/826,738.80
  6. Step 6: Final answer
    x = 492,154.56

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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.