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Finding the Fourth Proportional to 418,710.63, 577,634.16 and 279,040.62

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Solution

The fourth proportional to 418,710.63, 577,634.16 and 279,040.62 is: 384,951.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,710.63 : 577,634.16 = 279,040.62 : x
  2. Step 2: Convert to fraction form
    418,710.63/577,634.16 = 279,040.62/x
  3. Step 3: Cross multiply
    418,710.63x = 577,634.16 × 279,040.62
  4. Step 4: Simplify right side
    418,710.63x = 161,183,394,139.58
  5. Step 5: Solve for x
    x = 161,183,394,139.58/418,710.63
  6. Step 6: Final answer
    x = 384,951.76

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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.