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Finding the Fourth Proportional to 638,567.67, 881,436.92 and 380,525.56

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Solution

The fourth proportional to 638,567.67, 881,436.92 and 380,525.56 is: 525,252.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,567.67 : 881,436.92 = 380,525.56 : x
  2. Step 2: Convert to fraction form
    638,567.67/881,436.92 = 380,525.56/x
  3. Step 3: Cross multiply
    638,567.67x = 881,436.92 × 380,525.56
  4. Step 4: Simplify right side
    638,567.67x = 335,409,273,481.46
  5. Step 5: Solve for x
    x = 335,409,273,481.46/638,567.67
  6. Step 6: Final answer
    x = 525,252.51

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1.5x scale

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.