Home / 661,038.06-991,645.35-261,585.42

Finding the Fourth Proportional to 661,038.06, 991,645.35 and 261,585.42

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Solution

The fourth proportional to 661,038.06, 991,645.35 and 261,585.42 is: 392,413.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,038.06 : 991,645.35 = 261,585.42 : x
  2. Step 2: Convert to fraction form
    661,038.06/991,645.35 = 261,585.42/x
  3. Step 3: Cross multiply
    661,038.06x = 991,645.35 × 261,585.42
  4. Step 4: Simplify right side
    661,038.06x = 259,399,965,370.80
  5. Step 5: Solve for x
    x = 259,399,965,370.80/661,038.06
  6. Step 6: Final answer
    x = 392,413.06

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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.