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Finding the Fourth Proportional to 542,449.14, 748,624.05 and 300,807.42

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Solution

The fourth proportional to 542,449.14, 748,624.05 and 300,807.42 is: 415,138.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,449.14 : 748,624.05 = 300,807.42 : x
  2. Step 2: Convert to fraction form
    542,449.14/748,624.05 = 300,807.42/x
  3. Step 3: Cross multiply
    542,449.14x = 748,624.05 × 300,807.42
  4. Step 4: Simplify right side
    542,449.14x = 225,191,669,030.45
  5. Step 5: Solve for x
    x = 225,191,669,030.45/542,449.14
  6. Step 6: Final answer
    x = 415,138.77

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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.