Home / 721,185.15-1,081,378.48-295,020.40

Finding the Fourth Proportional to 721,185.15, 1,081,378.48 and 295,020.40

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Solution

The fourth proportional to 721,185.15, 1,081,378.48 and 295,020.40 is: 442,367.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,185.15 : 1,081,378.48 = 295,020.40 : x
  2. Step 2: Convert to fraction form
    721,185.15/1,081,378.48 = 295,020.40/x
  3. Step 3: Cross multiply
    721,185.15x = 1,081,378.48 × 295,020.40
  4. Step 4: Simplify right side
    721,185.15x = 319,028,713,072.38
  5. Step 5: Solve for x
    x = 319,028,713,072.38/721,185.15
  6. Step 6: Final answer
    x = 442,367.28

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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.