Home / 664,012,972.20-996,019,458.30-388,513,957.80

Finding the Fourth Proportional to 664,012,972.20, 996,019,458.30 and 388,513,957.80

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Solution

The fourth proportional to 664,012,972.20, 996,019,458.30 and 388,513,957.80 is: 582,770,936.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,012,972.20 : 996,019,458.30 = 388,513,957.80 : x
  2. Step 2: Convert to fraction form
    664,012,972.20/996,019,458.30 = 388,513,957.80/x
  3. Step 3: Cross multiply
    664,012,972.20x = 996,019,458.30 × 388,513,957.80
  4. Step 4: Simplify right side
    664,012,972.20x = 386,967,461,789,945,024
  5. Step 5: Solve for x
    x = 386,967,461,789,945,024/664,012,972.20
  6. Step 6: Final answer
    x = 582,770,936.70

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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.