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Finding the Fourth Proportional to 700,878.32, 967,211.95 and 378,588.43

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Solution

The fourth proportional to 700,878.32, 967,211.95 and 378,588.43 is: 522,451.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    700,878.32 : 967,211.95 = 378,588.43 : x
  2. Step 2: Convert to fraction form
    700,878.32/967,211.95 = 378,588.43/x
  3. Step 3: Cross multiply
    700,878.32x = 967,211.95 × 378,588.43
  4. Step 4: Simplify right side
    700,878.32x = 366,175,253,627.74
  5. Step 5: Solve for x
    x = 366,175,253,627.74/700,878.32
  6. Step 6: Final answer
    x = 522,451.96

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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.