Home / 997,512.20-1,496,462.70-428,892.20

Finding the Fourth Proportional to 997,512.20, 1,496,462.70 and 428,892.20

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Solution

The fourth proportional to 997,512.20, 1,496,462.70 and 428,892.20 is: 643,421.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    997,512.20 : 1,496,462.70 = 428,892.20 : x
  2. Step 2: Convert to fraction form
    997,512.20/1,496,462.70 = 428,892.20/x
  3. Step 3: Cross multiply
    997,512.20x = 1,496,462.70 × 428,892.20
  4. Step 4: Simplify right side
    997,512.20x = 641,821,179,620.94
  5. Step 5: Solve for x
    x = 641,821,179,620.94/997,512.20
  6. Step 6: Final answer
    x = 643,421.88

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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.