Home / 864,078.60-1,296,117.90-303,169.80

Finding the Fourth Proportional to 864,078.60, 1,296,117.90 and 303,169.80

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Solution

The fourth proportional to 864,078.60, 1,296,117.90 and 303,169.80 is: 454,754.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    864,078.60 : 1,296,117.90 = 303,169.80 : x
  2. Step 2: Convert to fraction form
    864,078.60/1,296,117.90 = 303,169.80/x
  3. Step 3: Cross multiply
    864,078.60x = 1,296,117.90 × 303,169.80
  4. Step 4: Simplify right side
    864,078.60x = 392,943,804,519.42
  5. Step 5: Solve for x
    x = 392,943,804,519.42/864,078.60
  6. Step 6: Final answer
    x = 454,754.70

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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.