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Finding the Fourth Proportional to 636,211.18, 877,977.60 and 345,824.02

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Solution

The fourth proportional to 636,211.18, 877,977.60 and 345,824.02 is: 477,240.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,211.18 : 877,977.60 = 345,824.02 : x
  2. Step 2: Convert to fraction form
    636,211.18/877,977.60 = 345,824.02/x
  3. Step 3: Cross multiply
    636,211.18x = 877,977.60 × 345,824.02
  4. Step 4: Simplify right side
    636,211.18x = 303,625,743,101.95
  5. Step 5: Solve for x
    x = 303,625,743,101.95/636,211.18
  6. Step 6: Final answer
    x = 477,240.50

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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.