Home / 644,727.24-889,743.63-354,333.54

Finding the Fourth Proportional to 644,727.24, 889,743.63 and 354,333.54

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Solution

The fourth proportional to 644,727.24, 889,743.63 and 354,333.54 is: 488,991.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,727.24 : 889,743.63 = 354,333.54 : x
  2. Step 2: Convert to fraction form
    644,727.24/889,743.63 = 354,333.54/x
  3. Step 3: Cross multiply
    644,727.24x = 889,743.63 × 354,333.54
  4. Step 4: Simplify right side
    644,727.24x = 315,266,010,110.35
  5. Step 5: Solve for x
    x = 315,266,010,110.35/644,727.24
  6. Step 6: Final answer
    x = 488,991.30

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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.