Home / 891,115.80-1,336,673.70-513,202.20

Finding the Fourth Proportional to 891,115.80, 1,336,673.70 and 513,202.20

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Solution

The fourth proportional to 891,115.80, 1,336,673.70 and 513,202.20 is: 769,803.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    891,115.80 : 1,336,673.70 = 513,202.20 : x
  2. Step 2: Convert to fraction form
    891,115.80/1,336,673.70 = 513,202.20/x
  3. Step 3: Cross multiply
    891,115.80x = 1,336,673.70 × 513,202.20
  4. Step 4: Simplify right side
    891,115.80x = 685,983,883,522.14
  5. Step 5: Solve for x
    x = 685,983,883,522.14/891,115.80
  6. Step 6: Final answer
    x = 769,803.30

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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.