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Finding the Fourth Proportional to 542,639.94, 748,867.32 and 300,906.27

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Solution

The fourth proportional to 542,639.94, 748,867.32 and 300,906.27 is: 415,264.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,639.94 : 748,867.32 = 300,906.27 : x
  2. Step 2: Convert to fraction form
    542,639.94/748,867.32 = 300,906.27/x
  3. Step 3: Cross multiply
    542,639.94x = 748,867.32 × 300,906.27
  4. Step 4: Simplify right side
    542,639.94x = 225,338,871,986.10
  5. Step 5: Solve for x
    x = 225,338,871,986.10/542,639.94
  6. Step 6: Final answer
    x = 415,264.07

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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.