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Finding the Fourth Proportional to 407,479.44, 611,621.42 and 305,924.28

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Solution

The fourth proportional to 407,479.44, 611,621.42 and 305,924.28 is: 459,188.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,479.44 : 611,621.42 = 305,924.28 : x
  2. Step 2: Convert to fraction form
    407,479.44/611,621.42 = 305,924.28/x
  3. Step 3: Cross multiply
    407,479.44x = 611,621.42 × 305,924.28
  4. Step 4: Simplify right side
    407,479.44x = 187,109,841,016.46
  5. Step 5: Solve for x
    x = 187,109,841,016.46/407,479.44
  6. Step 6: Final answer
    x = 459,188.42

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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.