Home / 645,085.20-967,512.60-408,003.60

Finding the Fourth Proportional to 645,085.20, 967,512.60 and 408,003.60

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Solution

The fourth proportional to 645,085.20, 967,512.60 and 408,003.60 is: 611,932.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,085.20 : 967,512.60 = 408,003.60 : x
  2. Step 2: Convert to fraction form
    645,085.20/967,512.60 = 408,003.60/x
  3. Step 3: Cross multiply
    645,085.20x = 967,512.60 × 408,003.60
  4. Step 4: Simplify right side
    645,085.20x = 394,748,623,845.36
  5. Step 5: Solve for x
    x = 394,748,623,845.36/645,085.20
  6. Step 6: Final answer
    x = 611,932.54

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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.