Home / 1,383,880.36-1,909,755.71-772,033.12

Finding the Fourth Proportional to 1,383,880.36, 1,909,755.71 and 772,033.12

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Solution

The fourth proportional to 1,383,880.36, 1,909,755.71 and 772,033.12 is: 1,065,406.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,383,880.36 : 1,909,755.71 = 772,033.12 : x
  2. Step 2: Convert to fraction form
    1,383,880.36/1,909,755.71 = 772,033.12/x
  3. Step 3: Cross multiply
    1,383,880.36x = 1,909,755.71 × 772,033.12
  4. Step 4: Simplify right side
    1,383,880.36x = 1,474,394,655,368.95
  5. Step 5: Solve for x
    x = 1,474,394,655,368.95/1,383,880.36
  6. Step 6: Final answer
    x = 1,065,406.16

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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.