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Finding the Fourth Proportional to 665,336.75, 918,164.72 and 363,530.75

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Solution

The fourth proportional to 665,336.75, 918,164.72 and 363,530.75 is: 501,672.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,336.75 : 918,164.72 = 363,530.75 : x
  2. Step 2: Convert to fraction form
    665,336.75/918,164.72 = 363,530.75/x
  3. Step 3: Cross multiply
    665,336.75x = 918,164.72 × 363,530.75
  4. Step 4: Simplify right side
    665,336.75x = 333,781,107,467.49
  5. Step 5: Solve for x
    x = 333,781,107,467.49/665,336.75
  6. Step 6: Final answer
    x = 501,672.44

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Half scale
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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.