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Finding the Fourth Proportional to 764,598.58, 1,055,173.17 and 420,460.90

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Solution

The fourth proportional to 764,598.58, 1,055,173.17 and 420,460.90 is: 580,250.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,598.58 : 1,055,173.17 = 420,460.90 : x
  2. Step 2: Convert to fraction form
    764,598.58/1,055,173.17 = 420,460.90/x
  3. Step 3: Cross multiply
    764,598.58x = 1,055,173.17 × 420,460.90
  4. Step 4: Simplify right side
    764,598.58x = 443,659,060,714.05
  5. Step 5: Solve for x
    x = 443,659,060,714.05/764,598.58
  6. Step 6: Final answer
    x = 580,250.96

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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.