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Finding the Fourth Proportional to 609,108.60, 911,913.30 and 372,912.60

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Solution

The fourth proportional to 609,108.60, 911,913.30 and 372,912.60 is: 558,297.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    609,108.60 : 911,913.30 = 372,912.60 : x
  2. Step 2: Convert to fraction form
    609,108.60/911,913.30 = 372,912.60/x
  3. Step 3: Cross multiply
    609,108.60x = 911,913.30 × 372,912.60
  4. Step 4: Simplify right side
    609,108.60x = 340,063,959,677.58
  5. Step 5: Solve for x
    x = 340,063,959,677.58/609,108.60
  6. Step 6: Final answer
    x = 558,297.75

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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.