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Finding the Fourth Proportional to 700,708.60, 966,977.67 and 378,418.60

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Solution

The fourth proportional to 700,708.60, 966,977.67 and 378,418.60 is: 522,217.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    700,708.60 : 966,977.67 = 378,418.60 : x
  2. Step 2: Convert to fraction form
    700,708.60/966,977.67 = 378,418.60/x
  3. Step 3: Cross multiply
    700,708.60x = 966,977.67 × 378,418.60
  4. Step 4: Simplify right side
    700,708.60x = 365,922,336,112.66
  5. Step 5: Solve for x
    x = 365,922,336,112.66/700,708.60
  6. Step 6: Final answer
    x = 522,217.56

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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.