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Finding the Fourth Proportional to 645,233.60, 969,250.08 and 621,614

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Solution

The fourth proportional to 645,233.60, 969,250.08 and 621,614 is: 933,769.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,233.60 : 969,250.08 = 621,614 : x
  2. Step 2: Convert to fraction form
    645,233.60/969,250.08 = 621,614/x
  3. Step 3: Cross multiply
    645,233.60x = 969,250.08 × 621,614
  4. Step 4: Simplify right side
    645,233.60x = 602,499,419,229.12
  5. Step 5: Solve for x
    x = 602,499,419,229.12/645,233.60
  6. Step 6: Final answer
    x = 933,769.44

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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.