Home / 728,479.50-1,092,456.77-307,788.18

Finding the Fourth Proportional to 728,479.50, 1,092,456.77 and 307,788.18

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Solution

The fourth proportional to 728,479.50, 1,092,456.77 and 307,788.18 is: 461,571.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,479.50 : 1,092,456.77 = 307,788.18 : x
  2. Step 2: Convert to fraction form
    728,479.50/1,092,456.77 = 307,788.18/x
  3. Step 3: Cross multiply
    728,479.50x = 1,092,456.77 × 307,788.18
  4. Step 4: Simplify right side
    728,479.50x = 336,245,279,428.04
  5. Step 5: Solve for x
    x = 336,245,279,428.04/728,479.50
  6. Step 6: Final answer
    x = 461,571.37

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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.