Home / 642,565.30-886,745.26-356,090.14

Finding the Fourth Proportional to 642,565.30, 886,745.26 and 356,090.14

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Solution

The fourth proportional to 642,565.30, 886,745.26 and 356,090.14 is: 491,407.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,565.30 : 886,745.26 = 356,090.14 : x
  2. Step 2: Convert to fraction form
    642,565.30/886,745.26 = 356,090.14/x
  3. Step 3: Cross multiply
    642,565.30x = 886,745.26 × 356,090.14
  4. Step 4: Simplify right side
    642,565.30x = 315,761,243,777.74
  5. Step 5: Solve for x
    x = 315,761,243,777.74/642,565.30
  6. Step 6: Final answer
    x = 491,407.24

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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.