Home / 489,965.76-676,090.03-285,969.90

Finding the Fourth Proportional to 489,965.76, 676,090.03 and 285,969.90

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Solution

The fourth proportional to 489,965.76, 676,090.03 and 285,969.90 is: 394,601.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,965.76 : 676,090.03 = 285,969.90 : x
  2. Step 2: Convert to fraction form
    489,965.76/676,090.03 = 285,969.90/x
  3. Step 3: Cross multiply
    489,965.76x = 676,090.03 × 285,969.90
  4. Step 4: Simplify right side
    489,965.76x = 193,341,398,270.10
  5. Step 5: Solve for x
    x = 193,341,398,270.10/489,965.76
  6. Step 6: Final answer
    x = 394,601.86

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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.