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Finding the Fourth Proportional to 401,806.80, 603,401.40 and 284,302.80

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Solution

The fourth proportional to 401,806.80, 603,401.40 and 284,302.80 is: 426,943.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,806.80 : 603,401.40 = 284,302.80 : x
  2. Step 2: Convert to fraction form
    401,806.80/603,401.40 = 284,302.80/x
  3. Step 3: Cross multiply
    401,806.80x = 603,401.40 × 284,302.80
  4. Step 4: Simplify right side
    401,806.80x = 171,548,707,543.92
  5. Step 5: Solve for x
    x = 171,548,707,543.92/401,806.80
  6. Step 6: Final answer
    x = 426,943.27

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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.