Home / 677,455.70-1,016,183.55-425,513.30

Finding the Fourth Proportional to 677,455.70, 1,016,183.55 and 425,513.30

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Solution

The fourth proportional to 677,455.70, 1,016,183.55 and 425,513.30 is: 638,269.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    677,455.70 : 1,016,183.55 = 425,513.30 : x
  2. Step 2: Convert to fraction form
    677,455.70/1,016,183.55 = 425,513.30/x
  3. Step 3: Cross multiply
    677,455.70x = 1,016,183.55 × 425,513.30
  4. Step 4: Simplify right side
    677,455.70x = 432,399,615,766.22
  5. Step 5: Solve for x
    x = 432,399,615,766.22/677,455.70
  6. Step 6: Final answer
    x = 638,269.95

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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.