Home / 816,709.19-1,127,078.21-454,148.33

Finding the Fourth Proportional to 816,709.19, 1,127,078.21 and 454,148.33

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Solution

The fourth proportional to 816,709.19, 1,127,078.21 and 454,148.33 is: 626,735.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    816,709.19 : 1,127,078.21 = 454,148.33 : x
  2. Step 2: Convert to fraction form
    816,709.19/1,127,078.21 = 454,148.33/x
  3. Step 3: Cross multiply
    816,709.19x = 1,127,078.21 × 454,148.33
  4. Step 4: Simplify right side
    816,709.19x = 511,860,682,350.87
  5. Step 5: Solve for x
    x = 511,860,682,350.87/816,709.19
  6. Step 6: Final answer
    x = 626,735.55

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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.