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Finding the Fourth Proportional to 665,671.26, 918,626.32 and 363,865.26

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Solution

The fourth proportional to 665,671.26, 918,626.32 and 363,865.26 is: 502,134.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,671.26 : 918,626.32 = 363,865.26 : x
  2. Step 2: Convert to fraction form
    665,671.26/918,626.32 = 363,865.26/x
  3. Step 3: Cross multiply
    665,671.26x = 918,626.32 × 363,865.26
  4. Step 4: Simplify right side
    665,671.26x = 334,256,204,769.64
  5. Step 5: Solve for x
    x = 334,256,204,769.64/665,671.26
  6. Step 6: Final answer
    x = 502,134.05

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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.