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Finding the Fourth Proportional to 636,121.02, 877,853.70 and 345,732.54

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Solution

The fourth proportional to 636,121.02, 877,853.70 and 345,732.54 is: 477,114.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,121.02 : 877,853.70 = 345,732.54 : x
  2. Step 2: Convert to fraction form
    636,121.02/877,853.70 = 345,732.54/x
  3. Step 3: Cross multiply
    636,121.02x = 877,853.70 × 345,732.54
  4. Step 4: Simplify right side
    636,121.02x = 303,502,589,449.40
  5. Step 5: Solve for x
    x = 303,502,589,449.40/636,121.02
  6. Step 6: Final answer
    x = 477,114.54

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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.