Home / 858,779.82-1,288,169.73-326,174.85

Finding the Fourth Proportional to 858,779.82, 1,288,169.73 and 326,174.85

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Solution

The fourth proportional to 858,779.82, 1,288,169.73 and 326,174.85 is: 489,262.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,779.82 : 1,288,169.73 = 326,174.85 : x
  2. Step 2: Convert to fraction form
    858,779.82/1,288,169.73 = 326,174.85/x
  3. Step 3: Cross multiply
    858,779.82x = 1,288,169.73 × 326,174.85
  4. Step 4: Simplify right side
    858,779.82x = 420,168,568,457.29
  5. Step 5: Solve for x
    x = 420,168,568,457.29/858,779.82
  6. Step 6: Final answer
    x = 489,262.28

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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.