Home / 819,825.28-1,221,588.12-730,391.60

Finding the Fourth Proportional to 819,825.28, 1,221,588.12 and 730,391.60

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Solution

The fourth proportional to 819,825.28, 1,221,588.12 and 730,391.60 is: 1,088,326.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,825.28 : 1,221,588.12 = 730,391.60 : x
  2. Step 2: Convert to fraction form
    819,825.28/1,221,588.12 = 730,391.60/x
  3. Step 3: Cross multiply
    819,825.28x = 1,221,588.12 × 730,391.60
  4. Step 4: Simplify right side
    819,825.28x = 892,237,701,507.79
  5. Step 5: Solve for x
    x = 892,237,701,507.79/819,825.28
  6. Step 6: Final answer
    x = 1,088,326.65

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.