Home / 455,123.60-682,685.40-404,385.20

Finding the Fourth Proportional to 455,123.60, 682,685.40 and 404,385.20

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Solution

The fourth proportional to 455,123.60, 682,685.40 and 404,385.20 is: 606,577.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,123.60 : 682,685.40 = 404,385.20 : x
  2. Step 2: Convert to fraction form
    455,123.60/682,685.40 = 404,385.20/x
  3. Step 3: Cross multiply
    455,123.60x = 682,685.40 × 404,385.20
  4. Step 4: Simplify right side
    455,123.60x = 276,067,872,016.08
  5. Step 5: Solve for x
    x = 276,067,872,016.08/455,123.60
  6. Step 6: Final answer
    x = 606,577.80

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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.