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Finding the Fourth Proportional to 665,757.50, 918,745.36 and 363,951.50

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Solution

The fourth proportional to 665,757.50, 918,745.36 and 363,951.50 is: 502,253.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,757.50 : 918,745.36 = 363,951.50 : x
  2. Step 2: Convert to fraction form
    665,757.50/918,745.36 = 363,951.50/x
  3. Step 3: Cross multiply
    665,757.50x = 918,745.36 × 363,951.50
  4. Step 4: Simplify right side
    665,757.50x = 334,378,751,890.04
  5. Step 5: Solve for x
    x = 334,378,751,890.04/665,757.50
  6. Step 6: Final answer
    x = 502,253.08

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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.