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Finding the Fourth Proportional to 539,355.30, 743,989.62 and 348,481.23

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Solution

The fourth proportional to 539,355.30, 743,989.62 and 348,481.23 is: 480,696.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,355.30 : 743,989.62 = 348,481.23 : x
  2. Step 2: Convert to fraction form
    539,355.30/743,989.62 = 348,481.23/x
  3. Step 3: Cross multiply
    539,355.30x = 743,989.62 × 348,481.23
  4. Step 4: Simplify right side
    539,355.30x = 259,266,417,884.83
  5. Step 5: Solve for x
    x = 259,266,417,884.83/539,355.30
  6. Step 6: Final answer
    x = 480,696.89

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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.