Home / 747,645.30-1,121,358.60-215,110.80

Finding the Fourth Proportional to 747,645.30, 1,121,358.60 and 215,110.80

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Solution

The fourth proportional to 747,645.30, 1,121,358.60 and 215,110.80 is: 322,634.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    747,645.30 : 1,121,358.60 = 215,110.80 : x
  2. Step 2: Convert to fraction form
    747,645.30/1,121,358.60 = 215,110.80/x
  3. Step 3: Cross multiply
    747,645.30x = 1,121,358.60 × 215,110.80
  4. Step 4: Simplify right side
    747,645.30x = 241,216,345,532.88
  5. Step 5: Solve for x
    x = 241,216,345,532.88/747,645.30
  6. Step 6: Final answer
    x = 322,634.74

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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.