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Finding the Fourth Proportional to 542,315.28, 748,439.88 and 300,673.64

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Solution

The fourth proportional to 542,315.28, 748,439.88 and 300,673.64 is: 414,954.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,315.28 : 748,439.88 = 300,673.64 : x
  2. Step 2: Convert to fraction form
    542,315.28/748,439.88 = 300,673.64/x
  3. Step 3: Cross multiply
    542,315.28x = 748,439.88 × 300,673.64
  4. Step 4: Simplify right side
    542,315.28x = 225,036,143,040.76
  5. Step 5: Solve for x
    x = 225,036,143,040.76/542,315.28
  6. Step 6: Final answer
    x = 414,954.46

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Similar ratio
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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.