Home / 728,643.99-1,092,006.39-408,789.75

Finding the Fourth Proportional to 728,643.99, 1,092,006.39 and 408,789.75

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Solution

The fourth proportional to 728,643.99, 1,092,006.39 and 408,789.75 is: 612,646.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,643.99 : 1,092,006.39 = 408,789.75 : x
  2. Step 2: Convert to fraction form
    728,643.99/1,092,006.39 = 408,789.75/x
  3. Step 3: Cross multiply
    728,643.99x = 1,092,006.39 × 408,789.75
  4. Step 4: Simplify right side
    728,643.99x = 446,401,019,166.50
  5. Step 5: Solve for x
    x = 446,401,019,166.50/728,643.99
  6. Step 6: Final answer
    x = 612,646.27

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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.