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Finding the Fourth Proportional to 404,615.40, 606,121.20 and 354,751.80

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Solution

The fourth proportional to 404,615.40, 606,121.20 and 354,751.80 is: 531,424.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,615.40 : 606,121.20 = 354,751.80 : x
  2. Step 2: Convert to fraction form
    404,615.40/606,121.20 = 354,751.80/x
  3. Step 3: Cross multiply
    404,615.40x = 606,121.20 × 354,751.80
  4. Step 4: Simplify right side
    404,615.40x = 215,022,586,718.16
  5. Step 5: Solve for x
    x = 215,022,586,718.16/404,615.40
  6. Step 6: Final answer
    x = 531,424.62

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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.