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Finding the Fourth Proportional to 450,679.50, 621,937.71 and 246,729.78

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Solution

The fourth proportional to 450,679.50, 621,937.71 and 246,729.78 is: 340,487.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    450,679.50 : 621,937.71 = 246,729.78 : x
  2. Step 2: Convert to fraction form
    450,679.50/621,937.71 = 246,729.78/x
  3. Step 3: Cross multiply
    450,679.50x = 621,937.71 × 246,729.78
  4. Step 4: Simplify right side
    450,679.50x = 153,450,554,362.00
  5. Step 5: Solve for x
    x = 153,450,554,362.00/450,679.50
  6. Step 6: Final answer
    x = 340,487.10

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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.