Home / 509,947,818.40-764,921,727.60-164,936,321.20

Finding the Fourth Proportional to 509,947,818.40, 764,921,727.60 and 164,936,321.20

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Solution

The fourth proportional to 509,947,818.40, 764,921,727.60 and 164,936,321.20 is: 247,404,481.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,947,818.40 : 764,921,727.60 = 164,936,321.20 : x
  2. Step 2: Convert to fraction form
    509,947,818.40/764,921,727.60 = 164,936,321.20/x
  3. Step 3: Cross multiply
    509,947,818.40x = 764,921,727.60 × 164,936,321.20
  4. Step 4: Simplify right side
    509,947,818.40x = 126,163,375,756,292,496
  5. Step 5: Solve for x
    x = 126,163,375,756,292,496/509,947,818.40
  6. Step 6: Final answer
    x = 247,404,481.80

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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.