Home / 662,514.09-991,809.36-408,979.37

Finding the Fourth Proportional to 662,514.09, 991,809.36 and 408,979.37

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Solution

The fourth proportional to 662,514.09, 991,809.36 and 408,979.37 is: 612,258.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,514.09 : 991,809.36 = 408,979.37 : x
  2. Step 2: Convert to fraction form
    662,514.09/991,809.36 = 408,979.37/x
  3. Step 3: Cross multiply
    662,514.09x = 991,809.36 × 408,979.37
  4. Step 4: Simplify right side
    662,514.09x = 405,629,562,253.86
  5. Step 5: Solve for x
    x = 405,629,562,253.86/662,514.09
  6. Step 6: Final answer
    x = 612,258.02

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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.