Home / 686,512.36-1,029,755.58-213,187.24

Finding the Fourth Proportional to 686,512.36, 1,029,755.58 and 213,187.24

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Solution

The fourth proportional to 686,512.36, 1,029,755.58 and 213,187.24 is: 319,776.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,512.36 : 1,029,755.58 = 213,187.24 : x
  2. Step 2: Convert to fraction form
    686,512.36/1,029,755.58 = 213,187.24/x
  3. Step 3: Cross multiply
    686,512.36x = 1,029,755.58 × 213,187.24
  4. Step 4: Simplify right side
    686,512.36x = 219,530,749,974.80
  5. Step 5: Solve for x
    x = 219,530,749,974.80/686,512.36
  6. Step 6: Final answer
    x = 319,776.84

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1.5x scale

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.