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Finding the Fourth Proportional to 489,120.40, 733,680.60 and 322,908.40

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Solution

The fourth proportional to 489,120.40, 733,680.60 and 322,908.40 is: 484,362.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,120.40 : 733,680.60 = 322,908.40 : x
  2. Step 2: Convert to fraction form
    489,120.40/733,680.60 = 322,908.40/x
  3. Step 3: Cross multiply
    489,120.40x = 733,680.60 × 322,908.40
  4. Step 4: Simplify right side
    489,120.40x = 236,911,628,657.04
  5. Step 5: Solve for x
    x = 236,911,628,657.04/489,120.40
  6. Step 6: Final answer
    x = 484,362.60

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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.