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Finding the Fourth Proportional to 482,491.63, 665,825.60 and 278,535.66

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Solution

The fourth proportional to 482,491.63, 665,825.60 and 278,535.66 is: 384,371.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,491.63 : 665,825.60 = 278,535.66 : x
  2. Step 2: Convert to fraction form
    482,491.63/665,825.60 = 278,535.66/x
  3. Step 3: Cross multiply
    482,491.63x = 665,825.60 × 278,535.66
  4. Step 4: Simplify right side
    482,491.63x = 185,456,171,140.39
  5. Step 5: Solve for x
    x = 185,456,171,140.39/482,491.63
  6. Step 6: Final answer
    x = 384,371.79

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1.5x scale

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.