Home / 812,142.03-1,219,410.63-453,014.55

Finding the Fourth Proportional to 812,142.03, 1,219,410.63 and 453,014.55

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Solution

The fourth proportional to 812,142.03, 1,219,410.63 and 453,014.55 is: 680,189.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,142.03 : 1,219,410.63 = 453,014.55 : x
  2. Step 2: Convert to fraction form
    812,142.03/1,219,410.63 = 453,014.55/x
  3. Step 3: Cross multiply
    812,142.03x = 1,219,410.63 × 453,014.55
  4. Step 4: Simplify right side
    812,142.03x = 552,410,757,814.67
  5. Step 5: Solve for x
    x = 552,410,757,814.67/812,142.03
  6. Step 6: Final answer
    x = 680,189.84

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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.