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Finding the Fourth Proportional to 424,654.61, 633,579.84 and 338,865.89

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Solution

The fourth proportional to 424,654.61, 633,579.84 and 338,865.89 is: 505,584.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,654.61 : 633,579.84 = 338,865.89 : x
  2. Step 2: Convert to fraction form
    424,654.61/633,579.84 = 338,865.89/x
  3. Step 3: Cross multiply
    424,654.61x = 633,579.84 × 338,865.89
  4. Step 4: Simplify right side
    424,654.61x = 214,698,597,214.82
  5. Step 5: Solve for x
    x = 214,698,597,214.82/424,654.61
  6. Step 6: Final answer
    x = 505,584.05

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.