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Finding the Fourth Proportional to 761,927.12, 1,051,485 and 422,375.12

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Solution

The fourth proportional to 761,927.12, 1,051,485 and 422,375.12 is: 582,891.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    761,927.12 : 1,051,485 = 422,375.12 : x
  2. Step 2: Convert to fraction form
    761,927.12/1,051,485 = 422,375.12/x
  3. Step 3: Cross multiply
    761,927.12x = 1,051,485 × 422,375.12
  4. Step 4: Simplify right side
    761,927.12x = 444,121,103,053.20
  5. Step 5: Solve for x
    x = 444,121,103,053.20/761,927.12
  6. Step 6: Final answer
    x = 582,891.84

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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.