Home / 1,290,503.07-1,780,883.46-717,538.23

Finding the Fourth Proportional to 1,290,503.07, 1,780,883.46 and 717,538.23

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Solution

The fourth proportional to 1,290,503.07, 1,780,883.46 and 717,538.23 is: 990,196.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,503.07 : 1,780,883.46 = 717,538.23 : x
  2. Step 2: Convert to fraction form
    1,290,503.07/1,780,883.46 = 717,538.23/x
  3. Step 3: Cross multiply
    1,290,503.07x = 1,780,883.46 × 717,538.23
  4. Step 4: Simplify right side
    1,290,503.07x = 1,277,851,965,724.68
  5. Step 5: Solve for x
    x = 1,277,851,965,724.68/1,290,503.07
  6. Step 6: Final answer
    x = 990,196.77

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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.