Home / 687,751.20-1,031,626.80-332,801.10

Finding the Fourth Proportional to 687,751.20, 1,031,626.80 and 332,801.10

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Solution

The fourth proportional to 687,751.20, 1,031,626.80 and 332,801.10 is: 499,201.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,751.20 : 1,031,626.80 = 332,801.10 : x
  2. Step 2: Convert to fraction form
    687,751.20/1,031,626.80 = 332,801.10/x
  3. Step 3: Cross multiply
    687,751.20x = 1,031,626.80 × 332,801.10
  4. Step 4: Simplify right side
    687,751.20x = 343,326,533,829.48
  5. Step 5: Solve for x
    x = 343,326,533,829.48/687,751.20
  6. Step 6: Final answer
    x = 499,201.65

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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.