Home / 398,945,816.30-598,418,724.45-245,890,808.30

Finding the Fourth Proportional to 398,945,816.30, 598,418,724.45 and 245,890,808.30

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Solution

The fourth proportional to 398,945,816.30, 598,418,724.45 and 245,890,808.30 is: 368,836,212.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,945,816.30 : 598,418,724.45 = 245,890,808.30 : x
  2. Step 2: Convert to fraction form
    398,945,816.30/598,418,724.45 = 245,890,808.30/x
  3. Step 3: Cross multiply
    398,945,816.30x = 598,418,724.45 × 245,890,808.30
  4. Step 4: Simplify right side
    398,945,816.30x = 147,145,663,856,865,504
  5. Step 5: Solve for x
    x = 147,145,663,856,865,504/398,945,816.30
  6. Step 6: Final answer
    x = 368,836,212.45

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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.