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Finding the Fourth Proportional to 542,665.88, 748,878.91 and 300,985.46

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Solution

The fourth proportional to 542,665.88, 748,878.91 and 300,985.46 is: 415,359.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,665.88 : 748,878.91 = 300,985.46 : x
  2. Step 2: Convert to fraction form
    542,665.88/748,878.91 = 300,985.46/x
  3. Step 3: Cross multiply
    542,665.88x = 748,878.91 × 300,985.46
  4. Step 4: Simplify right side
    542,665.88x = 225,401,658,713.79
  5. Step 5: Solve for x
    x = 225,401,658,713.79/542,665.88
  6. Step 6: Final answer
    x = 415,359.93

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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.