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Finding the Fourth Proportional to 667,003.43, 920,995.43 and 615,997.46

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Solution

The fourth proportional to 667,003.43, 920,995.43 and 615,997.46 is: 850,566.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,003.43 : 920,995.43 = 615,997.46 : x
  2. Step 2: Convert to fraction form
    667,003.43/920,995.43 = 615,997.46/x
  3. Step 3: Cross multiply
    667,003.43x = 920,995.43 × 615,997.46
  4. Step 4: Simplify right side
    667,003.43x = 567,330,837,866.64
  5. Step 5: Solve for x
    x = 567,330,837,866.64/667,003.43
  6. Step 6: Final answer
    x = 850,566.60

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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.