Home / 819,720.92-1,131,215.93-452,189.76

Finding the Fourth Proportional to 819,720.92, 1,131,215.93 and 452,189.76

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Solution

The fourth proportional to 819,720.92, 1,131,215.93 and 452,189.76 is: 624,022.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,720.92 : 1,131,215.93 = 452,189.76 : x
  2. Step 2: Convert to fraction form
    819,720.92/1,131,215.93 = 452,189.76/x
  3. Step 3: Cross multiply
    819,720.92x = 1,131,215.93 × 452,189.76
  4. Step 4: Simplify right side
    819,720.92x = 511,524,256,043.02
  5. Step 5: Solve for x
    x = 511,524,256,043.02/819,720.92
  6. Step 6: Final answer
    x = 624,022.45

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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.