Home / 728,270.22-1,005,013.06-405,973.38

Finding the Fourth Proportional to 728,270.22, 1,005,013.06 and 405,973.38

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Solution

The fourth proportional to 728,270.22, 1,005,013.06 and 405,973.38 is: 560,243.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,270.22 : 1,005,013.06 = 405,973.38 : x
  2. Step 2: Convert to fraction form
    728,270.22/1,005,013.06 = 405,973.38/x
  3. Step 3: Cross multiply
    728,270.22x = 1,005,013.06 × 405,973.38
  4. Step 4: Simplify right side
    728,270.22x = 408,008,548,912.34
  5. Step 5: Solve for x
    x = 408,008,548,912.34/728,270.22
  6. Step 6: Final answer
    x = 560,243.35

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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.