Home / 878,882.41-1,212,890.39-496,886.41

Finding the Fourth Proportional to 878,882.41, 1,212,890.39 and 496,886.41

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Solution

The fourth proportional to 878,882.41, 1,212,890.39 and 496,886.41 is: 685,721.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,882.41 : 1,212,890.39 = 496,886.41 : x
  2. Step 2: Convert to fraction form
    878,882.41/1,212,890.39 = 496,886.41/x
  3. Step 3: Cross multiply
    878,882.41x = 1,212,890.39 × 496,886.41
  4. Step 4: Simplify right side
    878,882.41x = 602,668,751,610.60
  5. Step 5: Solve for x
    x = 602,668,751,610.60/878,882.41
  6. Step 6: Final answer
    x = 685,721.71

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1.5x scale

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.