Home / 858,808.20-1,288,212.30-498,609.30

Finding the Fourth Proportional to 858,808.20, 1,288,212.30 and 498,609.30

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Solution

The fourth proportional to 858,808.20, 1,288,212.30 and 498,609.30 is: 747,913.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,808.20 : 1,288,212.30 = 498,609.30 : x
  2. Step 2: Convert to fraction form
    858,808.20/1,288,212.30 = 498,609.30/x
  3. Step 3: Cross multiply
    858,808.20x = 1,288,212.30 × 498,609.30
  4. Step 4: Simplify right side
    858,808.20x = 642,314,633,154.39
  5. Step 5: Solve for x
    x = 642,314,633,154.39/858,808.20
  6. Step 6: Final answer
    x = 747,913.95

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Double scale
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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.