Home / 858,748.68-1,288,006.38-326,403.72

Finding the Fourth Proportional to 858,748.68, 1,288,006.38 and 326,403.72

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Solution

The fourth proportional to 858,748.68, 1,288,006.38 and 326,403.72 is: 489,561.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,748.68 : 1,288,006.38 = 326,403.72 : x
  2. Step 2: Convert to fraction form
    858,748.68/1,288,006.38 = 326,403.72/x
  3. Step 3: Cross multiply
    858,748.68x = 1,288,006.38 × 326,403.72
  4. Step 4: Simplify right side
    858,748.68x = 420,410,073,815.73
  5. Step 5: Solve for x
    x = 420,410,073,815.73/858,748.68
  6. Step 6: Final answer
    x = 489,561.25

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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.