Home / 686,160.32-1,029,339.72-259,580.48

Finding the Fourth Proportional to 686,160.32, 1,029,339.72 and 259,580.48

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Solution

The fourth proportional to 686,160.32, 1,029,339.72 and 259,580.48 is: 389,408.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,160.32 : 1,029,339.72 = 259,580.48 : x
  2. Step 2: Convert to fraction form
    686,160.32/1,029,339.72 = 259,580.48/x
  3. Step 3: Cross multiply
    686,160.32x = 1,029,339.72 × 259,580.48
  4. Step 4: Simplify right side
    686,160.32x = 267,196,498,600.67
  5. Step 5: Solve for x
    x = 267,196,498,600.67/686,160.32
  6. Step 6: Final answer
    x = 389,408.26

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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.