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Finding the Fourth Proportional to 638,239.86, 880,759.58 and 347,854.04

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Solution

The fourth proportional to 638,239.86, 880,759.58 and 347,854.04 is: 480,032.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,239.86 : 880,759.58 = 347,854.04 : x
  2. Step 2: Convert to fraction form
    638,239.86/880,759.58 = 347,854.04/x
  3. Step 3: Cross multiply
    638,239.86x = 880,759.58 × 347,854.04
  4. Step 4: Simplify right side
    638,239.86x = 306,375,778,171.70
  5. Step 5: Solve for x
    x = 306,375,778,171.70/638,239.86
  6. Step 6: Final answer
    x = 480,032.35

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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.