Home / 398,946,007.80-598,419,011.70-245,890,999.80

Finding the Fourth Proportional to 398,946,007.80, 598,419,011.70 and 245,890,999.80

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Solution

The fourth proportional to 398,946,007.80, 598,419,011.70 and 245,890,999.80 is: 368,836,499.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,946,007.80 : 598,419,011.70 = 245,890,999.80 : x
  2. Step 2: Convert to fraction form
    398,946,007.80/598,419,011.70 = 245,890,999.80/x
  3. Step 3: Cross multiply
    398,946,007.80x = 598,419,011.70 × 245,890,999.80
  4. Step 4: Simplify right side
    398,946,007.80x = 147,145,849,086,240,928
  5. Step 5: Solve for x
    x = 147,145,849,086,240,928/398,946,007.80
  6. Step 6: Final answer
    x = 368,836,499.70

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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.