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Finding the Fourth Proportional to 925,888.32, 1,388,880 and 261,092.16

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Solution

The fourth proportional to 925,888.32, 1,388,880 and 261,092.16 is: 391,651.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    925,888.32 : 1,388,880 = 261,092.16 : x
  2. Step 2: Convert to fraction form
    925,888.32/1,388,880 = 261,092.16/x
  3. Step 3: Cross multiply
    925,888.32x = 1,388,880 × 261,092.16
  4. Step 4: Simplify right side
    925,888.32x = 362,625,679,180.80
  5. Step 5: Solve for x
    x = 362,625,679,180.80/925,888.32
  6. Step 6: Final answer
    x = 391,651.64

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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.