Home / 621,120.02-857,176.44-379,363.46

Finding the Fourth Proportional to 621,120.02, 857,176.44 and 379,363.46

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Solution

The fourth proportional to 621,120.02, 857,176.44 and 379,363.46 is: 523,540.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,120.02 : 857,176.44 = 379,363.46 : x
  2. Step 2: Convert to fraction form
    621,120.02/857,176.44 = 379,363.46/x
  3. Step 3: Cross multiply
    621,120.02x = 857,176.44 × 379,363.46
  4. Step 4: Simplify right side
    621,120.02x = 325,181,420,108.88
  5. Step 5: Solve for x
    x = 325,181,420,108.88/621,120.02
  6. Step 6: Final answer
    x = 523,540.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.