Home / 1,291,393.76-1,782,147.36-718,487.24

Finding the Fourth Proportional to 1,291,393.76, 1,782,147.36 and 718,487.24

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Solution

The fourth proportional to 1,291,393.76, 1,782,147.36 and 718,487.24 is: 991,525.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,291,393.76 : 1,782,147.36 = 718,487.24 : x
  2. Step 2: Convert to fraction form
    1,291,393.76/1,782,147.36 = 718,487.24/x
  3. Step 3: Cross multiply
    1,291,393.76x = 1,782,147.36 × 718,487.24
  4. Step 4: Simplify right side
    1,291,393.76x = 1,280,450,137,959.69
  5. Step 5: Solve for x
    x = 1,280,450,137,959.69/1,291,393.76
  6. Step 6: Final answer
    x = 991,525.73

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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.