Home / 642,540.48-886,683.56-356,087.22

Finding the Fourth Proportional to 642,540.48, 886,683.56 and 356,087.22

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Solution

The fourth proportional to 642,540.48, 886,683.56 and 356,087.22 is: 491,388.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,540.48 : 886,683.56 = 356,087.22 : x
  2. Step 2: Convert to fraction form
    642,540.48/886,683.56 = 356,087.22/x
  3. Step 3: Cross multiply
    642,540.48x = 886,683.56 × 356,087.22
  4. Step 4: Simplify right side
    642,540.48x = 315,736,682,119.67
  5. Step 5: Solve for x
    x = 315,736,682,119.67/642,540.48
  6. Step 6: Final answer
    x = 491,388.00

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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.