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Finding the Fourth Proportional to 414,773.64, 621,526.59 and 279,336.87

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Solution

The fourth proportional to 414,773.64, 621,526.59 and 279,336.87 is: 418,578.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    414,773.64 : 621,526.59 = 279,336.87 : x
  2. Step 2: Convert to fraction form
    414,773.64/621,526.59 = 279,336.87/x
  3. Step 3: Cross multiply
    414,773.64x = 621,526.59 × 279,336.87
  4. Step 4: Simplify right side
    414,773.64x = 173,615,292,272.37
  5. Step 5: Solve for x
    x = 173,615,292,272.37/414,773.64
  6. Step 6: Final answer
    x = 418,578.41

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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.