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Finding the Fourth Proportional to 484,492.80, 726,739.20 and 379,401.60

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Solution

The fourth proportional to 484,492.80, 726,739.20 and 379,401.60 is: 569,102.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,492.80 : 726,739.20 = 379,401.60 : x
  2. Step 2: Convert to fraction form
    484,492.80/726,739.20 = 379,401.60/x
  3. Step 3: Cross multiply
    484,492.80x = 726,739.20 × 379,401.60
  4. Step 4: Simplify right side
    484,492.80x = 275,726,015,262.72
  5. Step 5: Solve for x
    x = 275,726,015,262.72/484,492.80
  6. Step 6: Final answer
    x = 569,102.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.