Home / 1,321,188.23-1,823,153.42-777,218.91

Finding the Fourth Proportional to 1,321,188.23, 1,823,153.42 and 777,218.91

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Solution

The fourth proportional to 1,321,188.23, 1,823,153.42 and 777,218.91 is: 1,072,511.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,321,188.23 : 1,823,153.42 = 777,218.91 : x
  2. Step 2: Convert to fraction form
    1,321,188.23/1,823,153.42 = 777,218.91/x
  3. Step 3: Cross multiply
    1,321,188.23x = 1,823,153.42 × 777,218.91
  4. Step 4: Simplify right side
    1,321,188.23x = 1,416,989,309,969.08
  5. Step 5: Solve for x
    x = 1,416,989,309,969.08/1,321,188.23
  6. Step 6: Final answer
    x = 1,072,511.31

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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.