Home / 1,405,989.49-1,940,255.36-761,394.73

Finding the Fourth Proportional to 1,405,989.49, 1,940,255.36 and 761,394.73

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Solution

The fourth proportional to 1,405,989.49, 1,940,255.36 and 761,394.73 is: 1,050,719.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,405,989.49 : 1,940,255.36 = 761,394.73 : x
  2. Step 2: Convert to fraction form
    1,405,989.49/1,940,255.36 = 761,394.73/x
  3. Step 3: Cross multiply
    1,405,989.49x = 1,940,255.36 × 761,394.73
  4. Step 4: Simplify right side
    1,405,989.49x = 1,477,300,202,151.28
  5. Step 5: Solve for x
    x = 1,477,300,202,151.28/1,405,989.49
  6. Step 6: Final answer
    x = 1,050,719.24

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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.