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Finding the Fourth Proportional to 643,291.80, 964,937.70 and 483,624.60

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Solution

The fourth proportional to 643,291.80, 964,937.70 and 483,624.60 is: 725,436.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,291.80 : 964,937.70 = 483,624.60 : x
  2. Step 2: Convert to fraction form
    643,291.80/964,937.70 = 483,624.60/x
  3. Step 3: Cross multiply
    643,291.80x = 964,937.70 × 483,624.60
  4. Step 4: Simplify right side
    643,291.80x = 466,667,609,187.42
  5. Step 5: Solve for x
    x = 466,667,609,187.42/643,291.80
  6. Step 6: Final answer
    x = 725,436.90

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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.