Home / 678,556.40-1,016,279.40-663,004.40

Finding the Fourth Proportional to 678,556.40, 1,016,279.40 and 663,004.40

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Solution

The fourth proportional to 678,556.40, 1,016,279.40 and 663,004.40 is: 992,987.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,556.40 : 1,016,279.40 = 663,004.40 : x
  2. Step 2: Convert to fraction form
    678,556.40/1,016,279.40 = 663,004.40/x
  3. Step 3: Cross multiply
    678,556.40x = 1,016,279.40 × 663,004.40
  4. Step 4: Simplify right side
    678,556.40x = 673,797,713,829.36
  5. Step 5: Solve for x
    x = 673,797,713,829.36/678,556.40
  6. Step 6: Final answer
    x = 992,987.04

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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.