Home / 1,321,089.28-1,823,113.92-717,481.60

Finding the Fourth Proportional to 1,321,089.28, 1,823,113.92 and 717,481.60

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Solution

The fourth proportional to 1,321,089.28, 1,823,113.92 and 717,481.60 is: 990,130.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,321,089.28 : 1,823,113.92 = 717,481.60 : x
  2. Step 2: Convert to fraction form
    1,321,089.28/1,823,113.92 = 717,481.60/x
  3. Step 3: Cross multiply
    1,321,089.28x = 1,823,113.92 × 717,481.60
  4. Step 4: Simplify right side
    1,321,089.28x = 1,308,050,692,303.87
  5. Step 5: Solve for x
    x = 1,308,050,692,303.87/1,321,089.28
  6. Step 6: Final answer
    x = 990,130.43

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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.