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Finding the Fourth Proportional to 664,893.87, 917,598.19 and 370,589.38

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Solution

The fourth proportional to 664,893.87, 917,598.19 and 370,589.38 is: 511,438.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,893.87 : 917,598.19 = 370,589.38 : x
  2. Step 2: Convert to fraction form
    664,893.87/917,598.19 = 370,589.38/x
  3. Step 3: Cross multiply
    664,893.87x = 917,598.19 × 370,589.38
  4. Step 4: Simplify right side
    664,893.87x = 340,052,144,321.22
  5. Step 5: Solve for x
    x = 340,052,144,321.22/664,893.87
  6. Step 6: Final answer
    x = 511,438.23

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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.