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Finding the Fourth Proportional to 647,455.20, 971,182.80 and 332,527.20

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Solution

The fourth proportional to 647,455.20, 971,182.80 and 332,527.20 is: 498,790.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,455.20 : 971,182.80 = 332,527.20 : x
  2. Step 2: Convert to fraction form
    647,455.20/971,182.80 = 332,527.20/x
  3. Step 3: Cross multiply
    647,455.20x = 971,182.80 × 332,527.20
  4. Step 4: Simplify right side
    647,455.20x = 322,944,697,172.16
  5. Step 5: Solve for x
    x = 322,944,697,172.16/647,455.20
  6. Step 6: Final answer
    x = 498,790.80

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Double scale
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Similar ratio
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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.