Home / 919,991.31-1,269,559.76-512,082.69

Finding the Fourth Proportional to 919,991.31, 1,269,559.76 and 512,082.69

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Solution

The fourth proportional to 919,991.31, 1,269,559.76 and 512,082.69 is: 706,658.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,991.31 : 1,269,559.76 = 512,082.69 : x
  2. Step 2: Convert to fraction form
    919,991.31/1,269,559.76 = 512,082.69/x
  3. Step 3: Cross multiply
    919,991.31x = 1,269,559.76 × 512,082.69
  4. Step 4: Simplify right side
    919,991.31x = 650,119,574,456.14
  5. Step 5: Solve for x
    x = 650,119,574,456.14/919,991.31
  6. Step 6: Final answer
    x = 706,658.39

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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.