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Finding the Fourth Proportional to 482,782.82, 666,086.15 and 278,806.79

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Solution

The fourth proportional to 482,782.82, 666,086.15 and 278,806.79 is: 384,664.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,782.82 : 666,086.15 = 278,806.79 : x
  2. Step 2: Convert to fraction form
    482,782.82/666,086.15 = 278,806.79/x
  3. Step 3: Cross multiply
    482,782.82x = 666,086.15 × 278,806.79
  4. Step 4: Simplify right side
    482,782.82x = 185,709,343,707.19
  5. Step 5: Solve for x
    x = 185,709,343,707.19/482,782.82
  6. Step 6: Final answer
    x = 384,664.36

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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.