Home / 1,290,653.09-1,781,102.72-717,680.96

Finding the Fourth Proportional to 1,290,653.09, 1,781,102.72 and 717,680.96

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Solution

The fourth proportional to 1,290,653.09, 1,781,102.72 and 717,680.96 is: 990,400.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,653.09 : 1,781,102.72 = 717,680.96 : x
  2. Step 2: Convert to fraction form
    1,290,653.09/1,781,102.72 = 717,680.96/x
  3. Step 3: Cross multiply
    1,290,653.09x = 1,781,102.72 × 717,680.96
  4. Step 4: Simplify right side
    1,290,653.09x = 1,278,263,502,836.90
  5. Step 5: Solve for x
    x = 1,278,263,502,836.90/1,290,653.09
  6. Step 6: Final answer
    x = 990,400.53

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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.