Home / 538,278.27-742,669.88-320,304.77

Finding the Fourth Proportional to 538,278.27, 742,669.88 and 320,304.77

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Solution

The fourth proportional to 538,278.27, 742,669.88 and 320,304.77 is: 441,928.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,278.27 : 742,669.88 = 320,304.77 : x
  2. Step 2: Convert to fraction form
    538,278.27/742,669.88 = 320,304.77/x
  3. Step 3: Cross multiply
    538,278.27x = 742,669.88 × 320,304.77
  4. Step 4: Simplify right side
    538,278.27x = 237,880,705,099.33
  5. Step 5: Solve for x
    x = 237,880,705,099.33/538,278.27
  6. Step 6: Final answer
    x = 441,928.87

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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.