Home / 491,631,157.61-678,442,972.24-268,608,039.54

Finding the Fourth Proportional to 491,631,157.61, 678,442,972.24 and 268,608,039.54

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Solution

The fourth proportional to 491,631,157.61, 678,442,972.24 and 268,608,039.54 is: 370,674,709.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,631,157.61 : 678,442,972.24 = 268,608,039.54 : x
  2. Step 2: Convert to fraction form
    491,631,157.61/678,442,972.24 = 268,608,039.54/x
  3. Step 3: Cross multiply
    491,631,157.61x = 678,442,972.24 × 268,608,039.54
  4. Step 4: Simplify right side
    491,631,157.61x = 182,235,236,710,116,544
  5. Step 5: Solve for x
    x = 182,235,236,710,116,544/491,631,157.61
  6. Step 6: Final answer
    x = 370,674,709.87

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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.