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Finding the Fourth Proportional to 571,610.31, 788,765.40 and 329,970.73

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Solution

The fourth proportional to 571,610.31, 788,765.40 and 329,970.73 is: 455,326.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,610.31 : 788,765.40 = 329,970.73 : x
  2. Step 2: Convert to fraction form
    571,610.31/788,765.40 = 329,970.73/x
  3. Step 3: Cross multiply
    571,610.31x = 788,765.40 × 329,970.73
  4. Step 4: Simplify right side
    571,610.31x = 260,269,498,213.25
  5. Step 5: Solve for x
    x = 260,269,498,213.25/571,610.31
  6. Step 6: Final answer
    x = 455,326.81

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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.