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Finding the Fourth Proportional to 545,121.90, 816,698.70 and 444,738.60

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Solution

The fourth proportional to 545,121.90, 816,698.70 and 444,738.60 is: 666,304.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,121.90 : 816,698.70 = 444,738.60 : x
  2. Step 2: Convert to fraction form
    545,121.90/816,698.70 = 444,738.60/x
  3. Step 3: Cross multiply
    545,121.90x = 816,698.70 × 444,738.60
  4. Step 4: Simplify right side
    545,121.90x = 363,217,436,459.82
  5. Step 5: Solve for x
    x = 363,217,436,459.82/545,121.90
  6. Step 6: Final answer
    x = 666,304.98

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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.