Home / 858,627.43-1,287,899.58-326,106.90

Finding the Fourth Proportional to 858,627.43, 1,287,899.58 and 326,106.90

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Solution

The fourth proportional to 858,627.43, 1,287,899.58 and 326,106.90 is: 489,144.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,627.43 : 1,287,899.58 = 326,106.90 : x
  2. Step 2: Convert to fraction form
    858,627.43/1,287,899.58 = 326,106.90/x
  3. Step 3: Cross multiply
    858,627.43x = 1,287,899.58 × 326,106.90
  4. Step 4: Simplify right side
    858,627.43x = 419,992,939,545.10
  5. Step 5: Solve for x
    x = 419,992,939,545.10/858,627.43
  6. Step 6: Final answer
    x = 489,144.56

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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.