Home / 661,552.40-991,234.20-380,579.60

Finding the Fourth Proportional to 661,552.40, 991,234.20 and 380,579.60

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Solution

The fourth proportional to 661,552.40, 991,234.20 and 380,579.60 is: 570,239.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,552.40 : 991,234.20 = 380,579.60 : x
  2. Step 2: Convert to fraction form
    661,552.40/991,234.20 = 380,579.60/x
  3. Step 3: Cross multiply
    661,552.40x = 991,234.20 × 380,579.60
  4. Step 4: Simplify right side
    661,552.40x = 377,243,515,342.32
  5. Step 5: Solve for x
    x = 377,243,515,342.32/661,552.40
  6. Step 6: Final answer
    x = 570,239.81

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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.