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Finding the Fourth Proportional to 542,670.25, 748,884.95 and 300,989.83

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Solution

The fourth proportional to 542,670.25, 748,884.95 and 300,989.83 is: 415,365.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,670.25 : 748,884.95 = 300,989.83 : x
  2. Step 2: Convert to fraction form
    542,670.25/748,884.95 = 300,989.83/x
  3. Step 3: Cross multiply
    542,670.25x = 748,884.95 × 300,989.83
  4. Step 4: Simplify right side
    542,670.25x = 225,406,753,790.06
  5. Step 5: Solve for x
    x = 225,406,753,790.06/542,670.25
  6. Step 6: Final answer
    x = 415,365.97

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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.