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Finding the Fourth Proportional to 620,952.46, 931,790.05 and 261,097.22

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Solution

The fourth proportional to 620,952.46, 931,790.05 and 261,097.22 is: 391,797.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,952.46 : 931,790.05 = 261,097.22 : x
  2. Step 2: Convert to fraction form
    620,952.46/931,790.05 = 261,097.22/x
  3. Step 3: Cross multiply
    620,952.46x = 931,790.05 × 261,097.22
  4. Step 4: Simplify right side
    620,952.46x = 243,287,793,355.39
  5. Step 5: Solve for x
    x = 243,287,793,355.39/620,952.46
  6. Step 6: Final answer
    x = 391,797.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.