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Finding the Fourth Proportional to 643,399.80, 965,099.70 and 483,732.60

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Solution

The fourth proportional to 643,399.80, 965,099.70 and 483,732.60 is: 725,598.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,399.80 : 965,099.70 = 483,732.60 : x
  2. Step 2: Convert to fraction form
    643,399.80/965,099.70 = 483,732.60/x
  3. Step 3: Cross multiply
    643,399.80x = 965,099.70 × 483,732.60
  4. Step 4: Simplify right side
    643,399.80x = 466,850,187,140.22
  5. Step 5: Solve for x
    x = 466,850,187,140.22/643,399.80
  6. Step 6: Final answer
    x = 725,598.90

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Similar ratio
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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.