Home / 780,764,123.14-1,171,148,922.12-198,498,431.41

Finding the Fourth Proportional to 780,764,123.14, 1,171,148,922.12 and 198,498,431.41

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Solution

The fourth proportional to 780,764,123.14, 1,171,148,922.12 and 198,498,431.41 is: 297,748,343.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,764,123.14 : 1,171,148,922.12 = 198,498,431.41 : x
  2. Step 2: Convert to fraction form
    780,764,123.14/1,171,148,922.12 = 198,498,431.41/x
  3. Step 3: Cross multiply
    780,764,123.14x = 1,171,148,922.12 × 198,498,431.41
  4. Step 4: Simplify right side
    780,764,123.14x = 232,471,223,988,332,224
  5. Step 5: Solve for x
    x = 232,471,223,988,332,224/780,764,123.14
  6. Step 6: Final answer
    x = 297,748,343.06

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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.