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Finding the Fourth Proportional to 664,647.54, 917,292.51 and 374,268.48

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Solution

The fourth proportional to 664,647.54, 917,292.51 and 374,268.48 is: 516,534.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,647.54 : 917,292.51 = 374,268.48 : x
  2. Step 2: Convert to fraction form
    664,647.54/917,292.51 = 374,268.48/x
  3. Step 3: Cross multiply
    664,647.54x = 917,292.51 × 374,268.48
  4. Step 4: Simplify right side
    664,647.54x = 343,313,673,433.09
  5. Step 5: Solve for x
    x = 343,313,673,433.09/664,647.54
  6. Step 6: Final answer
    x = 516,534.93

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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.