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Finding the Fourth Proportional to 424,940.80, 637,756.80 and 411,116.80

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Solution

The fourth proportional to 424,940.80, 637,756.80 and 411,116.80 is: 617,009.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,940.80 : 637,756.80 = 411,116.80 : x
  2. Step 2: Convert to fraction form
    424,940.80/637,756.80 = 411,116.80/x
  3. Step 3: Cross multiply
    424,940.80x = 637,756.80 × 411,116.80
  4. Step 4: Simplify right side
    424,940.80x = 262,192,534,794.24
  5. Step 5: Solve for x
    x = 262,192,534,794.24/424,940.80
  6. Step 6: Final answer
    x = 617,009.56

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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.