Home / 656,911.20-985,755.60-432,919.20

Finding the Fourth Proportional to 656,911.20, 985,755.60 and 432,919.20

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Solution

The fourth proportional to 656,911.20, 985,755.60 and 432,919.20 is: 649,635.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,911.20 : 985,755.60 = 432,919.20 : x
  2. Step 2: Convert to fraction form
    656,911.20/985,755.60 = 432,919.20/x
  3. Step 3: Cross multiply
    656,911.20x = 985,755.60 × 432,919.20
  4. Step 4: Simplify right side
    656,911.20x = 426,752,525,747.52
  5. Step 5: Solve for x
    x = 426,752,525,747.52/656,911.20
  6. Step 6: Final answer
    x = 649,635.03

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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.