Home / 1,290,493.32-1,780,869.96-717,528.48

Finding the Fourth Proportional to 1,290,493.32, 1,780,869.96 and 717,528.48

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Solution

The fourth proportional to 1,290,493.32, 1,780,869.96 and 717,528.48 is: 990,183.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,493.32 : 1,780,869.96 = 717,528.48 : x
  2. Step 2: Convert to fraction form
    1,290,493.32/1,780,869.96 = 717,528.48/x
  3. Step 3: Cross multiply
    1,290,493.32x = 1,780,869.96 × 717,528.48
  4. Step 4: Simplify right side
    1,290,493.32x = 1,277,824,915,476.46
  5. Step 5: Solve for x
    x = 1,277,824,915,476.46/1,290,493.32
  6. Step 6: Final answer
    x = 990,183.29

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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.