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Finding the Fourth Proportional to 647,258.80, 970,542.60 and 272,858.80

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Solution

The fourth proportional to 647,258.80, 970,542.60 and 272,858.80 is: 409,142.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,258.80 : 970,542.60 = 272,858.80 : x
  2. Step 2: Convert to fraction form
    647,258.80/970,542.60 = 272,858.80/x
  3. Step 3: Cross multiply
    647,258.80x = 970,542.60 × 272,858.80
  4. Step 4: Simplify right side
    647,258.80x = 264,821,089,184.88
  5. Step 5: Solve for x
    x = 264,821,089,184.88/647,258.80
  6. Step 6: Final answer
    x = 409,142.51

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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.