Home / 1,294,577.43-1,786,479.67-721,605.30

Finding the Fourth Proportional to 1,294,577.43, 1,786,479.67 and 721,605.30

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Solution

The fourth proportional to 1,294,577.43, 1,786,479.67 and 721,605.30 is: 995,794.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,294,577.43 : 1,786,479.67 = 721,605.30 : x
  2. Step 2: Convert to fraction form
    1,294,577.43/1,786,479.67 = 721,605.30/x
  3. Step 3: Cross multiply
    1,294,577.43x = 1,786,479.67 × 721,605.30
  4. Step 4: Simplify right side
    1,294,577.43x = 1,289,133,198,214.25
  5. Step 5: Solve for x
    x = 1,289,133,198,214.25/1,294,577.43
  6. Step 6: Final answer
    x = 995,794.59

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.