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Finding the Fourth Proportional to 542,498.54, 748,644.36 and 300,781.16

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Solution

The fourth proportional to 542,498.54, 748,644.36 and 300,781.16 is: 415,075.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,498.54 : 748,644.36 = 300,781.16 : x
  2. Step 2: Convert to fraction form
    542,498.54/748,644.36 = 300,781.16/x
  3. Step 3: Cross multiply
    542,498.54x = 748,644.36 × 300,781.16
  4. Step 4: Simplify right side
    542,498.54x = 225,178,119,028.26
  5. Step 5: Solve for x
    x = 225,178,119,028.26/542,498.54
  6. Step 6: Final answer
    x = 415,075.99

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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.