Home / 679,087.38-937,191.36-421,014.56

Finding the Fourth Proportional to 679,087.38, 937,191.36 and 421,014.56

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Solution

The fourth proportional to 679,087.38, 937,191.36 and 421,014.56 is: 581,031.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,087.38 : 937,191.36 = 421,014.56 : x
  2. Step 2: Convert to fraction form
    679,087.38/937,191.36 = 421,014.56/x
  3. Step 3: Cross multiply
    679,087.38x = 937,191.36 × 421,014.56
  4. Step 4: Simplify right side
    679,087.38x = 394,571,203,380.25
  5. Step 5: Solve for x
    x = 394,571,203,380.25/679,087.38
  6. Step 6: Final answer
    x = 581,031.57

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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.