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Finding the Fourth Proportional to 612,435.11, 918,593.26 and 185,974.64

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Solution

The fourth proportional to 612,435.11, 918,593.26 and 185,974.64 is: 278,943.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,435.11 : 918,593.26 = 185,974.64 : x
  2. Step 2: Convert to fraction form
    612,435.11/918,593.26 = 185,974.64/x
  3. Step 3: Cross multiply
    612,435.11x = 918,593.26 × 185,974.64
  4. Step 4: Simplify right side
    612,435.11x = 170,835,050,834.93
  5. Step 5: Solve for x
    x = 170,835,050,834.93/612,435.11
  6. Step 6: Final answer
    x = 278,943.92

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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.