Home / 720,821.80-1,081,247.10-188,309.80

Finding the Fourth Proportional to 720,821.80, 1,081,247.10 and 188,309.80

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Solution

The fourth proportional to 720,821.80, 1,081,247.10 and 188,309.80 is: 282,468.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,821.80 : 1,081,247.10 = 188,309.80 : x
  2. Step 2: Convert to fraction form
    720,821.80/1,081,247.10 = 188,309.80/x
  3. Step 3: Cross multiply
    720,821.80x = 1,081,247.10 × 188,309.80
  4. Step 4: Simplify right side
    720,821.80x = 203,609,425,151.58
  5. Step 5: Solve for x
    x = 203,609,425,151.58/720,821.80
  6. Step 6: Final answer
    x = 282,468.46

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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.