Home / 858,808.20-1,288,212.30-480,894.60

Finding the Fourth Proportional to 858,808.20, 1,288,212.30 and 480,894.60

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Solution

The fourth proportional to 858,808.20, 1,288,212.30 and 480,894.60 is: 721,341.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,808.20 : 1,288,212.30 = 480,894.60 : x
  2. Step 2: Convert to fraction form
    858,808.20/1,288,212.30 = 480,894.60/x
  3. Step 3: Cross multiply
    858,808.20x = 1,288,212.30 × 480,894.60
  4. Step 4: Simplify right side
    858,808.20x = 619,494,338,723.58
  5. Step 5: Solve for x
    x = 619,494,338,723.58/858,808.20
  6. Step 6: Final answer
    x = 721,341.90

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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.