Home / 690,720.54-953,231.67-388,942.62

Finding the Fourth Proportional to 690,720.54, 953,231.67 and 388,942.62

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Solution

The fourth proportional to 690,720.54, 953,231.67 and 388,942.62 is: 536,761.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,720.54 : 953,231.67 = 388,942.62 : x
  2. Step 2: Convert to fraction form
    690,720.54/953,231.67 = 388,942.62/x
  3. Step 3: Cross multiply
    690,720.54x = 953,231.67 × 388,942.62
  4. Step 4: Simplify right side
    690,720.54x = 370,752,423,196.78
  5. Step 5: Solve for x
    x = 370,752,423,196.78/690,720.54
  6. Step 6: Final answer
    x = 536,761.83

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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.