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Finding the Fourth Proportional to 638,951.99, 881,739.56 and 352,472

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Solution

The fourth proportional to 638,951.99, 881,739.56 and 352,472 is: 486,403.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,951.99 : 881,739.56 = 352,472 : x
  2. Step 2: Convert to fraction form
    638,951.99/881,739.56 = 352,472/x
  3. Step 3: Cross multiply
    638,951.99x = 881,739.56 × 352,472
  4. Step 4: Simplify right side
    638,951.99x = 310,788,504,429.96
  5. Step 5: Solve for x
    x = 310,788,504,429.96/638,951.99
  6. Step 6: Final answer
    x = 486,403.53

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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.