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Finding the Fourth Proportional to 700,698.54, 966,963.95 and 378,408.61

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Solution

The fourth proportional to 700,698.54, 966,963.95 and 378,408.61 is: 522,203.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    700,698.54 : 966,963.95 = 378,408.61 : x
  2. Step 2: Convert to fraction form
    700,698.54/966,963.95 = 378,408.61/x
  3. Step 3: Cross multiply
    700,698.54x = 966,963.95 × 378,408.61
  4. Step 4: Simplify right side
    700,698.54x = 365,907,484,239.61
  5. Step 5: Solve for x
    x = 365,907,484,239.61/700,698.54
  6. Step 6: Final answer
    x = 522,203.86

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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.