Home / 858,969.38-1,288,620.15-326,448.90

Finding the Fourth Proportional to 858,969.38, 1,288,620.15 and 326,448.90

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Solution

The fourth proportional to 858,969.38, 1,288,620.15 and 326,448.90 is: 489,736.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,969.38 : 1,288,620.15 = 326,448.90 : x
  2. Step 2: Convert to fraction form
    858,969.38/1,288,620.15 = 326,448.90/x
  3. Step 3: Cross multiply
    858,969.38x = 1,288,620.15 × 326,448.90
  4. Step 4: Simplify right side
    858,969.38x = 420,668,624,042.23
  5. Step 5: Solve for x
    x = 420,668,624,042.23/858,969.38
  6. Step 6: Final answer
    x = 489,736.46

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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.