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Finding the Fourth Proportional to 602,481.86, 831,206.79 and 395,861.55

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Solution

The fourth proportional to 602,481.86, 831,206.79 and 395,861.55 is: 546,145.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    602,481.86 : 831,206.79 = 395,861.55 : x
  2. Step 2: Convert to fraction form
    602,481.86/831,206.79 = 395,861.55/x
  3. Step 3: Cross multiply
    602,481.86x = 831,206.79 × 395,861.55
  4. Step 4: Simplify right side
    602,481.86x = 329,042,808,259.93
  5. Step 5: Solve for x
    x = 329,042,808,259.93/602,481.86
  6. Step 6: Final answer
    x = 546,145.59

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.