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Finding the Fourth Proportional to 664,994.64, 917,691.12 and 363,188.64

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Solution

The fourth proportional to 664,994.64, 917,691.12 and 363,188.64 is: 501,199.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,994.64 : 917,691.12 = 363,188.64 : x
  2. Step 2: Convert to fraction form
    664,994.64/917,691.12 = 363,188.64/x
  3. Step 3: Cross multiply
    664,994.64x = 917,691.12 × 363,188.64
  4. Step 4: Simplify right side
    664,994.64x = 333,294,989,812.88
  5. Step 5: Solve for x
    x = 333,294,989,812.88/664,994.64
  6. Step 6: Final answer
    x = 501,199.51

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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.