Home / 644,847.60-966,132.44-391,611.36

Finding the Fourth Proportional to 644,847.60, 966,132.44 and 391,611.36

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Solution

The fourth proportional to 644,847.60, 966,132.44 and 391,611.36 is: 586,725.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,847.60 : 966,132.44 = 391,611.36 : x
  2. Step 2: Convert to fraction form
    644,847.60/966,132.44 = 391,611.36/x
  3. Step 3: Cross multiply
    644,847.60x = 966,132.44 × 391,611.36
  4. Step 4: Simplify right side
    644,847.60x = 378,348,438,768.52
  5. Step 5: Solve for x
    x = 378,348,438,768.52/644,847.60
  6. Step 6: Final answer
    x = 586,725.36

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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.