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Finding the Fourth Proportional to 571,309.22, 788,379.54 and 329,669.48

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Solution

The fourth proportional to 571,309.22, 788,379.54 and 329,669.48 is: 454,928.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,309.22 : 788,379.54 = 329,669.48 : x
  2. Step 2: Convert to fraction form
    571,309.22/788,379.54 = 329,669.48/x
  3. Step 3: Cross multiply
    571,309.22x = 788,379.54 × 329,669.48
  4. Step 4: Simplify right side
    571,309.22x = 259,904,672,994.44
  5. Step 5: Solve for x
    x = 259,904,672,994.44/571,309.22
  6. Step 6: Final answer
    x = 454,928.20

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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.