Home / 642,297.47-886,305.87-355,764.02

Finding the Fourth Proportional to 642,297.47, 886,305.87 and 355,764.02

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Solution

The fourth proportional to 642,297.47, 886,305.87 and 355,764.02 is: 490,918.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,297.47 : 886,305.87 = 355,764.02 : x
  2. Step 2: Convert to fraction form
    642,297.47/886,305.87 = 355,764.02/x
  3. Step 3: Cross multiply
    642,297.47x = 886,305.87 × 355,764.02
  4. Step 4: Simplify right side
    642,297.47x = 315,315,734,829.27
  5. Step 5: Solve for x
    x = 315,315,734,829.27/642,297.47
  6. Step 6: Final answer
    x = 490,918.54

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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.