Home / 979,839.38-1,352,199.75-538,319.64

Finding the Fourth Proportional to 979,839.38, 1,352,199.75 and 538,319.64

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Solution

The fourth proportional to 979,839.38, 1,352,199.75 and 538,319.64 is: 742,892.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    979,839.38 : 1,352,199.75 = 538,319.64 : x
  2. Step 2: Convert to fraction form
    979,839.38/1,352,199.75 = 538,319.64/x
  3. Step 3: Cross multiply
    979,839.38x = 1,352,199.75 × 538,319.64
  4. Step 4: Simplify right side
    979,839.38x = 727,915,682,628.09
  5. Step 5: Solve for x
    x = 727,915,682,628.09/979,839.38
  6. Step 6: Final answer
    x = 742,892.87

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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.