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Finding the Fourth Proportional to 647,585.80, 970,989.90 and 332,657.80

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Solution

The fourth proportional to 647,585.80, 970,989.90 and 332,657.80 is: 498,786.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,585.80 : 970,989.90 = 332,657.80 : x
  2. Step 2: Convert to fraction form
    647,585.80/970,989.90 = 332,657.80/x
  3. Step 3: Cross multiply
    647,585.80x = 970,989.90 × 332,657.80
  4. Step 4: Simplify right side
    647,585.80x = 323,007,363,956.22
  5. Step 5: Solve for x
    x = 323,007,363,956.22/647,585.80
  6. Step 6: Final answer
    x = 498,786.98

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1.5x scale

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.