Home / 455,121.20-682,681.80-277,974.20

Finding the Fourth Proportional to 455,121.20, 682,681.80 and 277,974.20

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Solution

The fourth proportional to 455,121.20, 682,681.80 and 277,974.20 is: 416,961.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,121.20 : 682,681.80 = 277,974.20 : x
  2. Step 2: Convert to fraction form
    455,121.20/682,681.80 = 277,974.20/x
  3. Step 3: Cross multiply
    455,121.20x = 682,681.80 × 277,974.20
  4. Step 4: Simplify right side
    455,121.20x = 189,767,927,209.56
  5. Step 5: Solve for x
    x = 189,767,927,209.56/455,121.20
  6. Step 6: Final answer
    x = 416,961.30

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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.