Home / 1,290,212.76-1,780,554.38-717,262.50

Finding the Fourth Proportional to 1,290,212.76, 1,780,554.38 and 717,262.50

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Solution

The fourth proportional to 1,290,212.76, 1,780,554.38 and 717,262.50 is: 989,856.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,212.76 : 1,780,554.38 = 717,262.50 : x
  2. Step 2: Convert to fraction form
    1,290,212.76/1,780,554.38 = 717,262.50/x
  3. Step 3: Cross multiply
    1,290,212.76x = 1,780,554.38 × 717,262.50
  4. Step 4: Simplify right side
    1,290,212.76x = 1,277,124,882,398.44
  5. Step 5: Solve for x
    x = 1,277,124,882,398.44/1,290,212.76
  6. Step 6: Final answer
    x = 989,856.03

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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.