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Finding the Fourth Proportional to 591,322.49, 885,695.46 and 388,689.86

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Solution

The fourth proportional to 591,322.49, 885,695.46 and 388,689.86 is: 582,187.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    591,322.49 : 885,695.46 = 388,689.86 : x
  2. Step 2: Convert to fraction form
    591,322.49/885,695.46 = 388,689.86/x
  3. Step 3: Cross multiply
    591,322.49x = 885,695.46 × 388,689.86
  4. Step 4: Simplify right side
    591,322.49x = 344,260,844,350.04
  5. Step 5: Solve for x
    x = 344,260,844,350.04/591,322.49
  6. Step 6: Final answer
    x = 582,187.98

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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.