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Finding the Fourth Proportional to 700,680.44, 966,939 and 378,390.52

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Solution

The fourth proportional to 700,680.44, 966,939 and 378,390.52 is: 522,178.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    700,680.44 : 966,939 = 378,390.52 : x
  2. Step 2: Convert to fraction form
    700,680.44/966,939 = 378,390.52/x
  3. Step 3: Cross multiply
    700,680.44x = 966,939 × 378,390.52
  4. Step 4: Simplify right side
    700,680.44x = 365,880,546,787.92
  5. Step 5: Solve for x
    x = 365,880,546,787.92/700,680.44
  6. Step 6: Final answer
    x = 522,178.91

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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.