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Finding the Fourth Proportional to 605,466.90, 908,200.35 and 418,842.90

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Solution

The fourth proportional to 605,466.90, 908,200.35 and 418,842.90 is: 628,264.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,466.90 : 908,200.35 = 418,842.90 : x
  2. Step 2: Convert to fraction form
    605,466.90/908,200.35 = 418,842.90/x
  3. Step 3: Cross multiply
    605,466.90x = 908,200.35 × 418,842.90
  4. Step 4: Simplify right side
    605,466.90x = 380,393,268,375.02
  5. Step 5: Solve for x
    x = 380,393,268,375.02/605,466.90
  6. Step 6: Final answer
    x = 628,264.35

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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.