Home / 489,849.60-676,091.94-283,126.80

Finding the Fourth Proportional to 489,849.60, 676,091.94 and 283,126.80

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Solution

The fourth proportional to 489,849.60, 676,091.94 and 283,126.80 is: 390,772.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,849.60 : 676,091.94 = 283,126.80 : x
  2. Step 2: Convert to fraction form
    489,849.60/676,091.94 = 283,126.80/x
  3. Step 3: Cross multiply
    489,849.60x = 676,091.94 × 283,126.80
  4. Step 4: Simplify right side
    489,849.60x = 191,419,747,477.99
  5. Step 5: Solve for x
    x = 191,419,747,477.99/489,849.60
  6. Step 6: Final answer
    x = 390,772.49

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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.