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Finding the Fourth Proportional to 665,074.38, 917,803.88 and 363,268.38

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Solution

The fourth proportional to 665,074.38, 917,803.88 and 363,268.38 is: 501,311.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,074.38 : 917,803.88 = 363,268.38 : x
  2. Step 2: Convert to fraction form
    665,074.38/917,803.88 = 363,268.38/x
  3. Step 3: Cross multiply
    665,074.38x = 917,803.88 × 363,268.38
  4. Step 4: Simplify right side
    665,074.38x = 333,409,128,645.31
  5. Step 5: Solve for x
    x = 333,409,128,645.31/665,074.38
  6. Step 6: Final answer
    x = 501,311.04

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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.