Home / 509,261,380.56-762,369,491.64-311,903,375.76

Finding the Fourth Proportional to 509,261,380.56, 762,369,491.64 and 311,903,375.76

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Solution

The fourth proportional to 509,261,380.56, 762,369,491.64 and 311,903,375.76 is: 466,922,541.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,261,380.56 : 762,369,491.64 = 311,903,375.76 : x
  2. Step 2: Convert to fraction form
    509,261,380.56/762,369,491.64 = 311,903,375.76/x
  3. Step 3: Cross multiply
    509,261,380.56x = 762,369,491.64 × 311,903,375.76
  4. Step 4: Simplify right side
    509,261,380.56x = 237,785,618,018,951,072
  5. Step 5: Solve for x
    x = 237,785,618,018,951,072/509,261,380.56
  6. Step 6: Final answer
    x = 466,922,541.34

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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.