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Finding the Fourth Proportional to 631,128.60, 946,401.30 and 275,959.80

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Solution

The fourth proportional to 631,128.60, 946,401.30 and 275,959.80 is: 413,812.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,128.60 : 946,401.30 = 275,959.80 : x
  2. Step 2: Convert to fraction form
    631,128.60/946,401.30 = 275,959.80/x
  3. Step 3: Cross multiply
    631,128.60x = 946,401.30 × 275,959.80
  4. Step 4: Simplify right side
    631,128.60x = 261,168,713,467.74
  5. Step 5: Solve for x
    x = 261,168,713,467.74/631,128.60
  6. Step 6: Final answer
    x = 413,812.20

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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.