Home / 1,200,986.72-1,657,324.32-717,443.36

Finding the Fourth Proportional to 1,200,986.72, 1,657,324.32 and 717,443.36

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Solution

The fourth proportional to 1,200,986.72, 1,657,324.32 and 717,443.36 is: 990,049.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,200,986.72 : 1,657,324.32 = 717,443.36 : x
  2. Step 2: Convert to fraction form
    1,200,986.72/1,657,324.32 = 717,443.36/x
  3. Step 3: Cross multiply
    1,200,986.72x = 1,657,324.32 × 717,443.36
  4. Step 4: Simplify right side
    1,200,986.72x = 1,189,036,328,750.52
  5. Step 5: Solve for x
    x = 1,189,036,328,750.52/1,200,986.72
  6. Step 6: Final answer
    x = 990,049.52

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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.