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Finding the Fourth Proportional to 647,502.80, 970,217.40 and 425,627.60

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Solution

The fourth proportional to 647,502.80, 970,217.40 and 425,627.60 is: 637,759.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,502.80 : 970,217.40 = 425,627.60 : x
  2. Step 2: Convert to fraction form
    647,502.80/970,217.40 = 425,627.60/x
  3. Step 3: Cross multiply
    647,502.80x = 970,217.40 × 425,627.60
  4. Step 4: Simplify right side
    647,502.80x = 412,951,303,440.24
  5. Step 5: Solve for x
    x = 412,951,303,440.24/647,502.80
  6. Step 6: Final answer
    x = 637,759.87

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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.