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Finding the Fourth Proportional to 591,323.49, 885,696.96 and 388,690.86

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Solution

The fourth proportional to 591,323.49, 885,696.96 and 388,690.86 is: 582,189.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    591,323.49 : 885,696.96 = 388,690.86 : x
  2. Step 2: Convert to fraction form
    591,323.49/885,696.96 = 388,690.86/x
  3. Step 3: Cross multiply
    591,323.49x = 885,696.96 × 388,690.86
  4. Step 4: Simplify right side
    591,323.49x = 344,262,313,081.79
  5. Step 5: Solve for x
    x = 344,262,313,081.79/591,323.49
  6. Step 6: Final answer
    x = 582,189.48

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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.