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Finding the Fourth Proportional to 543,641.67, 815,750.46 and 395,107.92

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Solution

The fourth proportional to 543,641.67, 815,750.46 and 395,107.92 is: 592,871.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,641.67 : 815,750.46 = 395,107.92 : x
  2. Step 2: Convert to fraction form
    543,641.67/815,750.46 = 395,107.92/x
  3. Step 3: Cross multiply
    543,641.67x = 815,750.46 × 395,107.92
  4. Step 4: Simplify right side
    543,641.67x = 322,309,467,489.64
  5. Step 5: Solve for x
    x = 322,309,467,489.64/543,641.67
  6. Step 6: Final answer
    x = 592,871.16

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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.