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Finding the Fourth Proportional to 638,680.80, 957,675.60 and 264,741.60

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Solution

The fourth proportional to 638,680.80, 957,675.60 and 264,741.60 is: 396,969.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,680.80 : 957,675.60 = 264,741.60 : x
  2. Step 2: Convert to fraction form
    638,680.80/957,675.60 = 264,741.60/x
  3. Step 3: Cross multiply
    638,680.80x = 957,675.60 × 264,741.60
  4. Step 4: Simplify right side
    638,680.80x = 253,536,570,624.96
  5. Step 5: Solve for x
    x = 253,536,570,624.96/638,680.80
  6. Step 6: Final answer
    x = 396,969.14

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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.