Home / 669,310.20-1,002,215.70-431,364.60

Finding the Fourth Proportional to 669,310.20, 1,002,215.70 and 431,364.60

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Solution

The fourth proportional to 669,310.20, 1,002,215.70 and 431,364.60 is: 645,919.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,310.20 : 1,002,215.70 = 431,364.60 : x
  2. Step 2: Convert to fraction form
    669,310.20/1,002,215.70 = 431,364.60/x
  3. Step 3: Cross multiply
    669,310.20x = 1,002,215.70 × 431,364.60
  4. Step 4: Simplify right side
    669,310.20x = 432,320,374,544.22
  5. Step 5: Solve for x
    x = 432,320,374,544.22/669,310.20
  6. Step 6: Final answer
    x = 645,919.30

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Double scale
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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.