Home / 728,478-1,092,454.52-307,786.68

Finding the Fourth Proportional to 728,478, 1,092,454.52 and 307,786.68

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Solution

The fourth proportional to 728,478, 1,092,454.52 and 307,786.68 is: 461,569.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,478 : 1,092,454.52 = 307,786.68 : x
  2. Step 2: Convert to fraction form
    728,478/1,092,454.52 = 307,786.68/x
  3. Step 3: Cross multiply
    728,478x = 1,092,454.52 × 307,786.68
  4. Step 4: Simplify right side
    728,478x = 336,242,948,222.86
  5. Step 5: Solve for x
    x = 336,242,948,222.86/728,478
  6. Step 6: Final answer
    x = 461,569.12

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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.