Home / 728,579.03-1,005,443.43-406,309.49

Finding the Fourth Proportional to 728,579.03, 1,005,443.43 and 406,309.49

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Solution

The fourth proportional to 728,579.03, 1,005,443.43 and 406,309.49 is: 560,709.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,579.03 : 1,005,443.43 = 406,309.49 : x
  2. Step 2: Convert to fraction form
    728,579.03/1,005,443.43 = 406,309.49/x
  3. Step 3: Cross multiply
    728,579.03x = 1,005,443.43 × 406,309.49
  4. Step 4: Simplify right side
    728,579.03x = 408,521,202,239.93
  5. Step 5: Solve for x
    x = 408,521,202,239.93/728,579.03
  6. Step 6: Final answer
    x = 560,709.53

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1.5x scale

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.