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Finding the Fourth Proportional to 490,265.55, 676,492.77 and 275,364.45

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Solution

The fourth proportional to 490,265.55, 676,492.77 and 275,364.45 is: 379,961.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,265.55 : 676,492.77 = 275,364.45 : x
  2. Step 2: Convert to fraction form
    490,265.55/676,492.77 = 275,364.45/x
  3. Step 3: Cross multiply
    490,265.55x = 676,492.77 × 275,364.45
  4. Step 4: Simplify right side
    490,265.55x = 186,282,059,540.03
  5. Step 5: Solve for x
    x = 186,282,059,540.03/490,265.55
  6. Step 6: Final answer
    x = 379,961.55

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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.