Home / 721,186.15-1,081,379.98-295,021.40

Finding the Fourth Proportional to 721,186.15, 1,081,379.98 and 295,021.40

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Solution

The fourth proportional to 721,186.15, 1,081,379.98 and 295,021.40 is: 442,368.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,186.15 : 1,081,379.98 = 295,021.40 : x
  2. Step 2: Convert to fraction form
    721,186.15/1,081,379.98 = 295,021.40/x
  3. Step 3: Cross multiply
    721,186.15x = 1,081,379.98 × 295,021.40
  4. Step 4: Simplify right side
    721,186.15x = 319,030,235,631.57
  5. Step 5: Solve for x
    x = 319,030,235,631.57/721,186.15
  6. Step 6: Final answer
    x = 442,368.78

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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.