Home / 664,121.40-996,182.10-619,506.60

Finding the Fourth Proportional to 664,121.40, 996,182.10 and 619,506.60

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Solution

The fourth proportional to 664,121.40, 996,182.10 and 619,506.60 is: 929,259.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,121.40 : 996,182.10 = 619,506.60 : x
  2. Step 2: Convert to fraction form
    664,121.40/996,182.10 = 619,506.60/x
  3. Step 3: Cross multiply
    664,121.40x = 996,182.10 × 619,506.60
  4. Step 4: Simplify right side
    664,121.40x = 617,141,385,751.86
  5. Step 5: Solve for x
    x = 617,141,385,751.86/664,121.40
  6. Step 6: Final answer
    x = 929,259.90

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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.