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Finding the Fourth Proportional to 542,574.05, 748,761.17 and 300,866.81

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Solution

The fourth proportional to 542,574.05, 748,761.17 and 300,866.81 is: 415,201.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,574.05 : 748,761.17 = 300,866.81 : x
  2. Step 2: Convert to fraction form
    542,574.05/748,761.17 = 300,866.81/x
  3. Step 3: Cross multiply
    542,574.05x = 748,761.17 × 300,866.81
  4. Step 4: Simplify right side
    542,574.05x = 225,277,379,421.63
  5. Step 5: Solve for x
    x = 225,277,379,421.63/542,574.05
  6. Step 6: Final answer
    x = 415,201.17

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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.