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Finding the Fourth Proportional to 665,910.32, 918,942.30 and 364,104.32

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Solution

The fourth proportional to 665,910.32, 918,942.30 and 364,104.32 is: 502,456.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,910.32 : 918,942.30 = 364,104.32 : x
  2. Step 2: Convert to fraction form
    665,910.32/918,942.30 = 364,104.32/x
  3. Step 3: Cross multiply
    665,910.32x = 918,942.30 × 364,104.32
  4. Step 4: Simplify right side
    665,910.32x = 334,590,861,260.74
  5. Step 5: Solve for x
    x = 334,590,861,260.74/665,910.32
  6. Step 6: Final answer
    x = 502,456.34

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Double scale
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1.5x scale

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.