Home / 819,500.48-1,229,236.08-313,924.40

Finding the Fourth Proportional to 819,500.48, 1,229,236.08 and 313,924.40

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Solution

The fourth proportional to 819,500.48, 1,229,236.08 and 313,924.40 is: 470,880.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,500.48 : 1,229,236.08 = 313,924.40 : x
  2. Step 2: Convert to fraction form
    819,500.48/1,229,236.08 = 313,924.40/x
  3. Step 3: Cross multiply
    819,500.48x = 1,229,236.08 × 313,924.40
  4. Step 4: Simplify right side
    819,500.48x = 385,887,198,872.35
  5. Step 5: Solve for x
    x = 385,887,198,872.35/819,500.48
  6. Step 6: Final answer
    x = 470,880.99

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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.