Home / 664,223.10-996,334.65-439,836.90

Finding the Fourth Proportional to 664,223.10, 996,334.65 and 439,836.90

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Solution

The fourth proportional to 664,223.10, 996,334.65 and 439,836.90 is: 659,755.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,223.10 : 996,334.65 = 439,836.90 : x
  2. Step 2: Convert to fraction form
    664,223.10/996,334.65 = 439,836.90/x
  3. Step 3: Cross multiply
    664,223.10x = 996,334.65 × 439,836.90
  4. Step 4: Simplify right side
    664,223.10x = 438,224,743,818.59
  5. Step 5: Solve for x
    x = 438,224,743,818.59/664,223.10
  6. Step 6: Final answer
    x = 659,755.35

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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.