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Finding the Fourth Proportional to 388,950, 582,646.79 and 309,122.68

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Solution

The fourth proportional to 388,950, 582,646.79 and 309,122.68 is: 463,065.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,950 : 582,646.79 = 309,122.68 : x
  2. Step 2: Convert to fraction form
    388,950/582,646.79 = 309,122.68/x
  3. Step 3: Cross multiply
    388,950x = 582,646.79 × 309,122.68
  4. Step 4: Simplify right side
    388,950x = 180,109,335,761.58
  5. Step 5: Solve for x
    x = 180,109,335,761.58/388,950
  6. Step 6: Final answer
    x = 463,065.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.