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Finding the Fourth Proportional to 393,326.44, 589,543.56 and 345,849.88

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Solution

The fourth proportional to 393,326.44, 589,543.56 and 345,849.88 is: 518,382.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,326.44 : 589,543.56 = 345,849.88 : x
  2. Step 2: Convert to fraction form
    393,326.44/589,543.56 = 345,849.88/x
  3. Step 3: Cross multiply
    393,326.44x = 589,543.56 × 345,849.88
  4. Step 4: Simplify right side
    393,326.44x = 203,893,569,480.77
  5. Step 5: Solve for x
    x = 203,893,569,480.77/393,326.44
  6. Step 6: Final answer
    x = 518,382.57

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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.