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Finding the Fourth Proportional to 424,812.70, 637,219.05 and 404,145.55

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Solution

The fourth proportional to 424,812.70, 637,219.05 and 404,145.55 is: 606,218.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,812.70 : 637,219.05 = 404,145.55 : x
  2. Step 2: Convert to fraction form
    424,812.70/637,219.05 = 404,145.55/x
  3. Step 3: Cross multiply
    424,812.70x = 637,219.05 × 404,145.55
  4. Step 4: Simplify right side
    424,812.70x = 257,529,243,432.73
  5. Step 5: Solve for x
    x = 257,529,243,432.73/424,812.70
  6. Step 6: Final answer
    x = 606,218.33

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.