Home / 499,310,910.27-689,100,921.32-287,625,056.67

Finding the Fourth Proportional to 499,310,910.27, 689,100,921.32 and 287,625,056.67

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Solution

The fourth proportional to 499,310,910.27, 689,100,921.32 and 287,625,056.67 is: 396,952,454.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,310,910.27 : 689,100,921.32 = 287,625,056.67 : x
  2. Step 2: Convert to fraction form
    499,310,910.27/689,100,921.32 = 287,625,056.67/x
  3. Step 3: Cross multiply
    499,310,910.27x = 689,100,921.32 × 287,625,056.67
  4. Step 4: Simplify right side
    499,310,910.27x = 198,202,691,544,576,128
  5. Step 5: Solve for x
    x = 198,202,691,544,576,128/499,310,910.27
  6. Step 6: Final answer
    x = 396,952,454.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.