Home / 865,669.05-1,298,568.84-258,409.38

Finding the Fourth Proportional to 865,669.05, 1,298,568.84 and 258,409.38

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Solution

The fourth proportional to 865,669.05, 1,298,568.84 and 258,409.38 is: 387,633.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,669.05 : 1,298,568.84 = 258,409.38 : x
  2. Step 2: Convert to fraction form
    865,669.05/1,298,568.84 = 258,409.38/x
  3. Step 3: Cross multiply
    865,669.05x = 1,298,568.84 × 258,409.38
  4. Step 4: Simplify right side
    865,669.05x = 335,562,368,831.72
  5. Step 5: Solve for x
    x = 335,562,368,831.72/865,669.05
  6. Step 6: Final answer
    x = 387,633.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.