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Finding the Fourth Proportional to 640,087.62, 960,269.83 and 340,524.66

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Solution

The fourth proportional to 640,087.62, 960,269.83 and 340,524.66 is: 510,860.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,087.62 : 960,269.83 = 340,524.66 : x
  2. Step 2: Convert to fraction form
    640,087.62/960,269.83 = 340,524.66/x
  3. Step 3: Cross multiply
    640,087.62x = 960,269.83 × 340,524.66
  4. Step 4: Simplify right side
    640,087.62x = 326,995,558,918.37
  5. Step 5: Solve for x
    x = 326,995,558,918.37/640,087.62
  6. Step 6: Final answer
    x = 510,860.62

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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.