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Finding the Fourth Proportional to 603,347.97, 831,937.88 and 385,269.89

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Solution

The fourth proportional to 603,347.97, 831,937.88 and 385,269.89 is: 531,236.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,347.97 : 831,937.88 = 385,269.89 : x
  2. Step 2: Convert to fraction form
    603,347.97/831,937.88 = 385,269.89/x
  3. Step 3: Cross multiply
    603,347.97x = 831,937.88 × 385,269.89
  4. Step 4: Simplify right side
    603,347.97x = 320,520,616,628.44
  5. Step 5: Solve for x
    x = 320,520,616,628.44/603,347.97
  6. Step 6: Final answer
    x = 531,236.76

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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.