Home / 719,072.70-992,291.31-396,778.60

Finding the Fourth Proportional to 719,072.70, 992,291.31 and 396,778.60

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Solution

The fourth proportional to 719,072.70, 992,291.31 and 396,778.60 is: 547,538.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,072.70 : 992,291.31 = 396,778.60 : x
  2. Step 2: Convert to fraction form
    719,072.70/992,291.31 = 396,778.60/x
  3. Step 3: Cross multiply
    719,072.70x = 992,291.31 × 396,778.60
  4. Step 4: Simplify right side
    719,072.70x = 393,719,956,773.97
  5. Step 5: Solve for x
    x = 393,719,956,773.97/719,072.70
  6. Step 6: Final answer
    x = 547,538.46

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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.