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Finding the Fourth Proportional to 482,783.82, 666,087.53 and 278,807.79

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Solution

The fourth proportional to 482,783.82, 666,087.53 and 278,807.79 is: 384,665.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,783.82 : 666,087.53 = 278,807.79 : x
  2. Step 2: Convert to fraction form
    482,783.82/666,087.53 = 278,807.79/x
  3. Step 3: Cross multiply
    482,783.82x = 666,087.53 × 278,807.79
  4. Step 4: Simplify right side
    482,783.82x = 185,710,392,185.86
  5. Step 5: Solve for x
    x = 185,710,392,185.86/482,783.82
  6. Step 6: Final answer
    x = 384,665.73

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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.