Home / 621,138.75-857,180.30-349,191.46

Finding the Fourth Proportional to 621,138.75, 857,180.30 and 349,191.46

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Solution

The fourth proportional to 621,138.75, 857,180.30 and 349,191.46 is: 481,889.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,138.75 : 857,180.30 = 349,191.46 : x
  2. Step 2: Convert to fraction form
    621,138.75/857,180.30 = 349,191.46/x
  3. Step 3: Cross multiply
    621,138.75x = 857,180.30 × 349,191.46
  4. Step 4: Simplify right side
    621,138.75x = 299,320,035,926.22
  5. Step 5: Solve for x
    x = 299,320,035,926.22/621,138.75
  6. Step 6: Final answer
    x = 481,889.17

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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.