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Finding the Fourth Proportional to 482,782.05, 666,085.11 and 278,806.04

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Solution

The fourth proportional to 482,782.05, 666,085.11 and 278,806.04 is: 384,663.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,782.05 : 666,085.11 = 278,806.04 : x
  2. Step 2: Convert to fraction form
    482,782.05/666,085.11 = 278,806.04/x
  3. Step 3: Cross multiply
    482,782.05x = 666,085.11 × 278,806.04
  4. Step 4: Simplify right side
    482,782.05x = 185,708,548,491.64
  5. Step 5: Solve for x
    x = 185,708,548,491.64/482,782.05
  6. Step 6: Final answer
    x = 384,663.32

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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.