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Finding the Fourth Proportional to 665,909.32, 918,940.92 and 364,103.32

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Solution

The fourth proportional to 665,909.32, 918,940.92 and 364,103.32 is: 502,454.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,909.32 : 918,940.92 = 364,103.32 : x
  2. Step 2: Convert to fraction form
    665,909.32/918,940.92 = 364,103.32/x
  3. Step 3: Cross multiply
    665,909.32x = 918,940.92 × 364,103.32
  4. Step 4: Simplify right side
    665,909.32x = 334,589,439,855.85
  5. Step 5: Solve for x
    x = 334,589,439,855.85/665,909.32
  6. Step 6: Final answer
    x = 502,454.96

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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.