Home / 664,621.30-996,931.95-486,162.10

Finding the Fourth Proportional to 664,621.30, 996,931.95 and 486,162.10

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Solution

The fourth proportional to 664,621.30, 996,931.95 and 486,162.10 is: 729,243.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,621.30 : 996,931.95 = 486,162.10 : x
  2. Step 2: Convert to fraction form
    664,621.30/996,931.95 = 486,162.10/x
  3. Step 3: Cross multiply
    664,621.30x = 996,931.95 × 486,162.10
  4. Step 4: Simplify right side
    664,621.30x = 484,670,530,369.10
  5. Step 5: Solve for x
    x = 484,670,530,369.10/664,621.30
  6. Step 6: Final answer
    x = 729,243.15

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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.