Home / 816,749.45-1,127,141.62-449,242.13

Finding the Fourth Proportional to 816,749.45, 1,127,141.62 and 449,242.13

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Solution

The fourth proportional to 816,749.45, 1,127,141.62 and 449,242.13 is: 619,969.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    816,749.45 : 1,127,141.62 = 449,242.13 : x
  2. Step 2: Convert to fraction form
    816,749.45/1,127,141.62 = 449,242.13/x
  3. Step 3: Cross multiply
    816,749.45x = 1,127,141.62 × 449,242.13
  4. Step 4: Simplify right side
    816,749.45x = 506,359,503,708.78
  5. Step 5: Solve for x
    x = 506,359,503,708.78/816,749.45
  6. Step 6: Final answer
    x = 619,969.20

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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.