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Finding the Fourth Proportional to 404,470.80, 606,706.20 and 328,363.20

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Solution

The fourth proportional to 404,470.80, 606,706.20 and 328,363.20 is: 492,544.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,470.80 : 606,706.20 = 328,363.20 : x
  2. Step 2: Convert to fraction form
    404,470.80/606,706.20 = 328,363.20/x
  3. Step 3: Cross multiply
    404,470.80x = 606,706.20 × 328,363.20
  4. Step 4: Simplify right side
    404,470.80x = 199,219,989,291.84
  5. Step 5: Solve for x
    x = 199,219,989,291.84/404,470.80
  6. Step 6: Final answer
    x = 492,544.80

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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.