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Finding the Fourth Proportional to 577,669.21, 797,166.63 and 319,556.43

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Solution

The fourth proportional to 577,669.21, 797,166.63 and 319,556.43 is: 440,978.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,669.21 : 797,166.63 = 319,556.43 : x
  2. Step 2: Convert to fraction form
    577,669.21/797,166.63 = 319,556.43/x
  3. Step 3: Cross multiply
    577,669.21x = 797,166.63 × 319,556.43
  4. Step 4: Simplify right side
    577,669.21x = 254,739,722,397.93
  5. Step 5: Solve for x
    x = 254,739,722,397.93/577,669.21
  6. Step 6: Final answer
    x = 440,978.54

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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.