Home / 686,512.60-1,029,845.70-213,194.20

Finding the Fourth Proportional to 686,512.60, 1,029,845.70 and 213,194.20

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Solution

The fourth proportional to 686,512.60, 1,029,845.70 and 213,194.20 is: 319,815.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,512.60 : 1,029,845.70 = 213,194.20 : x
  2. Step 2: Convert to fraction form
    686,512.60/1,029,845.70 = 213,194.20/x
  3. Step 3: Cross multiply
    686,512.60x = 1,029,845.70 × 213,194.20
  4. Step 4: Simplify right side
    686,512.60x = 219,557,130,134.94
  5. Step 5: Solve for x
    x = 219,557,130,134.94/686,512.60
  6. Step 6: Final answer
    x = 319,815.15

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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.