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Finding the Fourth Proportional to 691,067.70, 953,634.87 and 380,960.28

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Solution

The fourth proportional to 691,067.70, 953,634.87 and 380,960.28 is: 525,703.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,067.70 : 953,634.87 = 380,960.28 : x
  2. Step 2: Convert to fraction form
    691,067.70/953,634.87 = 380,960.28/x
  3. Step 3: Cross multiply
    691,067.70x = 953,634.87 × 380,960.28
  4. Step 4: Simplify right side
    691,067.70x = 363,297,007,092.96
  5. Step 5: Solve for x
    x = 363,297,007,092.96/691,067.70
  6. Step 6: Final answer
    x = 525,703.93

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1.5x scale

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.