Home / 721,788.48-1,082,656.80-189,305.28

Finding the Fourth Proportional to 721,788.48, 1,082,656.80 and 189,305.28

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Solution

The fourth proportional to 721,788.48, 1,082,656.80 and 189,305.28 is: 283,951.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,788.48 : 1,082,656.80 = 189,305.28 : x
  2. Step 2: Convert to fraction form
    721,788.48/1,082,656.80 = 189,305.28/x
  3. Step 3: Cross multiply
    721,788.48x = 1,082,656.80 × 189,305.28
  4. Step 4: Simplify right side
    721,788.48x = 204,952,648,667.90
  5. Step 5: Solve for x
    x = 204,952,648,667.90/721,788.48
  6. Step 6: Final answer
    x = 283,951.12

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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.