Home / 819,633.12-1,229,668.56-258,678.24

Finding the Fourth Proportional to 819,633.12, 1,229,668.56 and 258,678.24

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Solution

The fourth proportional to 819,633.12, 1,229,668.56 and 258,678.24 is: 388,086.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,633.12 : 1,229,668.56 = 258,678.24 : x
  2. Step 2: Convert to fraction form
    819,633.12/1,229,668.56 = 258,678.24/x
  3. Step 3: Cross multiply
    819,633.12x = 1,229,668.56 × 258,678.24
  4. Step 4: Simplify right side
    819,633.12x = 318,088,498,884.13
  5. Step 5: Solve for x
    x = 318,088,498,884.13/819,633.12
  6. Step 6: Final answer
    x = 388,086.44

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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.