Home / 818,261.49-1,129,183.20-450,748.90

Finding the Fourth Proportional to 818,261.49, 1,129,183.20 and 450,748.90

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Solution

The fourth proportional to 818,261.49, 1,129,183.20 and 450,748.90 is: 622,023.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,261.49 : 1,129,183.20 = 450,748.90 : x
  2. Step 2: Convert to fraction form
    818,261.49/1,129,183.20 = 450,748.90/x
  3. Step 3: Cross multiply
    818,261.49x = 1,129,183.20 × 450,748.90
  4. Step 4: Simplify right side
    818,261.49x = 508,978,085,298.48
  5. Step 5: Solve for x
    x = 508,978,085,298.48/818,261.49
  6. Step 6: Final answer
    x = 622,023.76

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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.