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Finding the Fourth Proportional to 455,363.38, 628,908.96 and 354,601

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Solution

The fourth proportional to 455,363.38, 628,908.96 and 354,601 is: 489,744.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,363.38 : 628,908.96 = 354,601 : x
  2. Step 2: Convert to fraction form
    455,363.38/628,908.96 = 354,601/x
  3. Step 3: Cross multiply
    455,363.38x = 628,908.96 × 354,601
  4. Step 4: Simplify right side
    455,363.38x = 223,011,746,124.96
  5. Step 5: Solve for x
    x = 223,011,746,124.96/455,363.38
  6. Step 6: Final answer
    x = 489,744.58

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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.