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Finding the Fourth Proportional to 638,270.86, 880,864.43 and 351,841.90

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Solution

The fourth proportional to 638,270.86, 880,864.43 and 351,841.90 is: 485,569.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,270.86 : 880,864.43 = 351,841.90 : x
  2. Step 2: Convert to fraction form
    638,270.86/880,864.43 = 351,841.90/x
  3. Step 3: Cross multiply
    638,270.86x = 880,864.43 × 351,841.90
  4. Step 4: Simplify right side
    638,270.86x = 309,925,014,693.62
  5. Step 5: Solve for x
    x = 309,925,014,693.62/638,270.86
  6. Step 6: Final answer
    x = 485,569.74

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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.