Home / 1,126,987.07-1,555,317.86-636,786.74

Finding the Fourth Proportional to 1,126,987.07, 1,555,317.86 and 636,786.74

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Solution

The fourth proportional to 1,126,987.07, 1,555,317.86 and 636,786.74 is: 878,808.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,126,987.07 : 1,555,317.86 = 636,786.74 : x
  2. Step 2: Convert to fraction form
    1,126,987.07/1,555,317.86 = 636,786.74/x
  3. Step 3: Cross multiply
    1,126,987.07x = 1,555,317.86 × 636,786.74
  4. Step 4: Simplify right side
    1,126,987.07x = 990,405,786,063.21
  5. Step 5: Solve for x
    x = 990,405,786,063.21/1,126,987.07
  6. Step 6: Final answer
    x = 878,808.47

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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.