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Finding the Fourth Proportional to 423,081.88, 631,649.51 and 322,706.68

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Solution

The fourth proportional to 423,081.88, 631,649.51 and 322,706.68 is: 481,792.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,081.88 : 631,649.51 = 322,706.68 : x
  2. Step 2: Convert to fraction form
    423,081.88/631,649.51 = 322,706.68/x
  3. Step 3: Cross multiply
    423,081.88x = 631,649.51 × 322,706.68
  4. Step 4: Simplify right side
    423,081.88x = 203,837,516,295.73
  5. Step 5: Solve for x
    x = 203,837,516,295.73/423,081.88
  6. Step 6: Final answer
    x = 481,792.12

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.