Home / 728,828.44-1,005,784.78-406,530.26

Finding the Fourth Proportional to 728,828.44, 1,005,784.78 and 406,530.26

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Solution

The fourth proportional to 728,828.44, 1,005,784.78 and 406,530.26 is: 561,012.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,828.44 : 1,005,784.78 = 406,530.26 : x
  2. Step 2: Convert to fraction form
    728,828.44/1,005,784.78 = 406,530.26/x
  3. Step 3: Cross multiply
    728,828.44x = 1,005,784.78 × 406,530.26
  4. Step 4: Simplify right side
    728,828.44x = 408,881,948,117.44
  5. Step 5: Solve for x
    x = 408,881,948,117.44/728,828.44
  6. Step 6: Final answer
    x = 561,012.61

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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.