Home / 398,945,817.30-598,418,725.95-245,890,809.30

Finding the Fourth Proportional to 398,945,817.30, 598,418,725.95 and 245,890,809.30

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Solution

The fourth proportional to 398,945,817.30, 598,418,725.95 and 245,890,809.30 is: 368,836,213.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,945,817.30 : 598,418,725.95 = 245,890,809.30 : x
  2. Step 2: Convert to fraction form
    398,945,817.30/598,418,725.95 = 245,890,809.30/x
  3. Step 3: Cross multiply
    398,945,817.30x = 598,418,725.95 × 245,890,809.30
  4. Step 4: Simplify right side
    398,945,817.30x = 147,145,664,824,120,416
  5. Step 5: Solve for x
    x = 147,145,664,824,120,416/398,945,817.30
  6. Step 6: Final answer
    x = 368,836,213.95

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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.