Home / 775,343.81-1,163,015.97-319,928.40

Finding the Fourth Proportional to 775,343.81, 1,163,015.97 and 319,928.40

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Solution

The fourth proportional to 775,343.81, 1,163,015.97 and 319,928.40 is: 479,892.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    775,343.81 : 1,163,015.97 = 319,928.40 : x
  2. Step 2: Convert to fraction form
    775,343.81/1,163,015.97 = 319,928.40/x
  3. Step 3: Cross multiply
    775,343.81x = 1,163,015.97 × 319,928.40
  4. Step 4: Simplify right side
    775,343.81x = 372,081,838,456.55
  5. Step 5: Solve for x
    x = 372,081,838,456.55/775,343.81
  6. Step 6: Final answer
    x = 479,892.71

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Double scale
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Similar ratio
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1.5x scale

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.