Home / 1,290,216.26-1,780,559.21-717,266

Finding the Fourth Proportional to 1,290,216.26, 1,780,559.21 and 717,266

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Solution

The fourth proportional to 1,290,216.26, 1,780,559.21 and 717,266 is: 989,860.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,216.26 : 1,780,559.21 = 717,266 : x
  2. Step 2: Convert to fraction form
    1,290,216.26/1,780,559.21 = 717,266/x
  3. Step 3: Cross multiply
    1,290,216.26x = 1,780,559.21 × 717,266
  4. Step 4: Simplify right side
    1,290,216.26x = 1,277,134,582,319.86
  5. Step 5: Solve for x
    x = 1,277,134,582,319.86/1,290,216.26
  6. Step 6: Final answer
    x = 989,860.86

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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.