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Finding the Fourth Proportional to 482,724.80, 724,087.20 and 349,323.20

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Solution

The fourth proportional to 482,724.80, 724,087.20 and 349,323.20 is: 523,984.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,724.80 : 724,087.20 = 349,323.20 : x
  2. Step 2: Convert to fraction form
    482,724.80/724,087.20 = 349,323.20/x
  3. Step 3: Cross multiply
    482,724.80x = 724,087.20 × 349,323.20
  4. Step 4: Simplify right side
    482,724.80x = 252,940,457,783.04
  5. Step 5: Solve for x
    x = 252,940,457,783.04/482,724.80
  6. Step 6: Final answer
    x = 523,984.80

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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.