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Finding the Fourth Proportional to 638,354.16, 880,928.52 and 351,879.03

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Solution

The fourth proportional to 638,354.16, 880,928.52 and 351,879.03 is: 485,592.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,354.16 : 880,928.52 = 351,879.03 : x
  2. Step 2: Convert to fraction form
    638,354.16/880,928.52 = 351,879.03/x
  3. Step 3: Cross multiply
    638,354.16x = 880,928.52 × 351,879.03
  4. Step 4: Simplify right side
    638,354.16x = 309,980,273,116.94
  5. Step 5: Solve for x
    x = 309,980,273,116.94/638,354.16
  6. Step 6: Final answer
    x = 485,592.94

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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.