Home / 867,122.80-1,298,715.90-445,906.60

Finding the Fourth Proportional to 867,122.80, 1,298,715.90 and 445,906.60

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Solution

The fourth proportional to 867,122.80, 1,298,715.90 and 445,906.60 is: 667,847.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    867,122.80 : 1,298,715.90 = 445,906.60 : x
  2. Step 2: Convert to fraction form
    867,122.80/1,298,715.90 = 445,906.60/x
  3. Step 3: Cross multiply
    867,122.80x = 1,298,715.90 × 445,906.60
  4. Step 4: Simplify right side
    867,122.80x = 579,105,991,334.94
  5. Step 5: Solve for x
    x = 579,105,991,334.94/867,122.80
  6. Step 6: Final answer
    x = 667,847.73

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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.