Home / 858,627.68-1,287,899.96-326,107.15

Finding the Fourth Proportional to 858,627.68, 1,287,899.96 and 326,107.15

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Solution

The fourth proportional to 858,627.68, 1,287,899.96 and 326,107.15 is: 489,144.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,627.68 : 1,287,899.96 = 326,107.15 : x
  2. Step 2: Convert to fraction form
    858,627.68/1,287,899.96 = 326,107.15/x
  3. Step 3: Cross multiply
    858,627.68x = 1,287,899.96 × 326,107.15
  4. Step 4: Simplify right side
    858,627.68x = 419,993,383,810.18
  5. Step 5: Solve for x
    x = 419,993,383,810.18/858,627.68
  6. Step 6: Final answer
    x = 489,144.94

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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.