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Finding the Fourth Proportional to 542,478.05, 748,618.35 and 300,754.40

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Solution

The fourth proportional to 542,478.05, 748,618.35 and 300,754.40 is: 415,040.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,478.05 : 748,618.35 = 300,754.40 : x
  2. Step 2: Convert to fraction form
    542,478.05/748,618.35 = 300,754.40/x
  3. Step 3: Cross multiply
    542,478.05x = 748,618.35 × 300,754.40
  4. Step 4: Simplify right side
    542,478.05x = 225,150,258,940.15
  5. Step 5: Solve for x
    x = 225,150,258,940.15/542,478.05
  6. Step 6: Final answer
    x = 415,040.32

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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.