Home / 690,147,512.73-952,485,294.11-388,742,744.61

Finding the Fourth Proportional to 690,147,512.73, 952,485,294.11 and 388,742,744.61

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Solution

The fourth proportional to 690,147,512.73, 952,485,294.11 and 388,742,744.61 is: 536,511,022.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,147,512.73 : 952,485,294.11 = 388,742,744.61 : x
  2. Step 2: Convert to fraction form
    690,147,512.73/952,485,294.11 = 388,742,744.61/x
  3. Step 3: Cross multiply
    690,147,512.73x = 952,485,294.11 × 388,742,744.61
  4. Step 4: Simplify right side
    690,147,512.73x = 370,271,747,431,040,768
  5. Step 5: Solve for x
    x = 370,271,747,431,040,768/690,147,512.73
  6. Step 6: Final answer
    x = 536,511,022.07

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.