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Finding the Fourth Proportional to 647,560.80, 970,920.72 and 310,593.60

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Solution

The fourth proportional to 647,560.80, 970,920.72 and 310,593.60 is: 465,688.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,560.80 : 970,920.72 = 310,593.60 : x
  2. Step 2: Convert to fraction form
    647,560.80/970,920.72 = 310,593.60/x
  3. Step 3: Cross multiply
    647,560.80x = 970,920.72 × 310,593.60
  4. Step 4: Simplify right side
    647,560.80x = 301,561,761,739.39
  5. Step 5: Solve for x
    x = 301,561,761,739.39/647,560.80
  6. Step 6: Final answer
    x = 465,688.72

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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.