Home / 686,720.70-1,029,352.05-331,503.30

Finding the Fourth Proportional to 686,720.70, 1,029,352.05 and 331,503.30

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Solution

The fourth proportional to 686,720.70, 1,029,352.05 and 331,503.30 is: 496,903.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,720.70 : 1,029,352.05 = 331,503.30 : x
  2. Step 2: Convert to fraction form
    686,720.70/1,029,352.05 = 331,503.30/x
  3. Step 3: Cross multiply
    686,720.70x = 1,029,352.05 × 331,503.30
  4. Step 4: Simplify right side
    686,720.70x = 341,233,601,436.77
  5. Step 5: Solve for x
    x = 341,233,601,436.77/686,720.70
  6. Step 6: Final answer
    x = 496,903.04

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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.