Home / 393,045.51-589,641.57-126,778.26

Finding the Fourth Proportional to 393,045.51, 589,641.57 and 126,778.26

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Solution

The fourth proportional to 393,045.51, 589,641.57 and 126,778.26 is: 190,191.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,045.51 : 589,641.57 = 126,778.26 : x
  2. Step 2: Convert to fraction form
    393,045.51/589,641.57 = 126,778.26/x
  3. Step 3: Cross multiply
    393,045.51x = 589,641.57 × 126,778.26
  4. Step 4: Simplify right side
    393,045.51x = 74,753,732,268.27
  5. Step 5: Solve for x
    x = 74,753,732,268.27/393,045.51
  6. Step 6: Final answer
    x = 190,191.03

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.