Home / 1,290,253.77-1,780,449.35-717,259.05

Finding the Fourth Proportional to 1,290,253.77, 1,780,449.35 and 717,259.05

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Solution

The fourth proportional to 1,290,253.77, 1,780,449.35 and 717,259.05 is: 989,761.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,253.77 : 1,780,449.35 = 717,259.05 : x
  2. Step 2: Convert to fraction form
    1,290,253.77/1,780,449.35 = 717,259.05/x
  3. Step 3: Cross multiply
    1,290,253.77x = 1,780,449.35 × 717,259.05
  4. Step 4: Simplify right side
    1,290,253.77x = 1,277,043,405,767.82
  5. Step 5: Solve for x
    x = 1,277,043,405,767.82/1,290,253.77
  6. Step 6: Final answer
    x = 989,761.42

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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.