Home / 1,285,078.11-1,773,418.28-712,127.85

Finding the Fourth Proportional to 1,285,078.11, 1,773,418.28 and 712,127.85

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Solution

The fourth proportional to 1,285,078.11, 1,773,418.28 and 712,127.85 is: 982,742.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,285,078.11 : 1,773,418.28 = 712,127.85 : x
  2. Step 2: Convert to fraction form
    1,285,078.11/1,773,418.28 = 712,127.85/x
  3. Step 3: Cross multiply
    1,285,078.11x = 1,773,418.28 × 712,127.85
  4. Step 4: Simplify right side
    1,285,078.11x = 1,262,900,546,887.10
  5. Step 5: Solve for x
    x = 1,262,900,546,887.10/1,285,078.11
  6. Step 6: Final answer
    x = 982,742.25

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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.