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Finding the Fourth Proportional to 644,448.48, 967,047.20 and 265,407.36

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Solution

The fourth proportional to 644,448.48, 967,047.20 and 265,407.36 is: 398,265.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,448.48 : 967,047.20 = 265,407.36 : x
  2. Step 2: Convert to fraction form
    644,448.48/967,047.20 = 265,407.36/x
  3. Step 3: Cross multiply
    644,448.48x = 967,047.20 × 265,407.36
  4. Step 4: Simplify right side
    644,448.48x = 256,661,444,347.39
  5. Step 5: Solve for x
    x = 256,661,444,347.39/644,448.48
  6. Step 6: Final answer
    x = 398,265.26

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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.