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Finding the Fourth Proportional to 665,336.25, 918,164.03 and 363,530.25

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Solution

The fourth proportional to 665,336.25, 918,164.03 and 363,530.25 is: 501,671.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,336.25 : 918,164.03 = 363,530.25 : x
  2. Step 2: Convert to fraction form
    665,336.25/918,164.03 = 363,530.25/x
  3. Step 3: Cross multiply
    665,336.25x = 918,164.03 × 363,530.25
  4. Step 4: Simplify right side
    665,336.25x = 333,780,399,366.91
  5. Step 5: Solve for x
    x = 333,780,399,366.91/665,336.25
  6. Step 6: Final answer
    x = 501,671.75

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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.