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Finding the Fourth Proportional to 542,669.25, 748,883.57 and 300,988.83

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Solution

The fourth proportional to 542,669.25, 748,883.57 and 300,988.83 is: 415,364.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,669.25 : 748,883.57 = 300,988.83 : x
  2. Step 2: Convert to fraction form
    542,669.25/748,883.57 = 300,988.83/x
  3. Step 3: Cross multiply
    542,669.25x = 748,883.57 × 300,988.83
  4. Step 4: Simplify right side
    542,669.25x = 225,405,588,035.58
  5. Step 5: Solve for x
    x = 225,405,588,035.58/542,669.25
  6. Step 6: Final answer
    x = 415,364.59

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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.