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Finding the Fourth Proportional to 481,389.87, 722,235.86 and 289,485.17

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Solution

The fourth proportional to 481,389.87, 722,235.86 and 289,485.17 is: 434,318.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,389.87 : 722,235.86 = 289,485.17 : x
  2. Step 2: Convert to fraction form
    481,389.87/722,235.86 = 289,485.17/x
  3. Step 3: Cross multiply
    481,389.87x = 722,235.86 × 289,485.17
  4. Step 4: Simplify right side
    481,389.87x = 209,076,573,241.50
  5. Step 5: Solve for x
    x = 209,076,573,241.50/481,389.87
  6. Step 6: Final answer
    x = 434,318.60

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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.