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Finding the Fourth Proportional to 508,440.78, 701,634.90 and 278,997.36

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Solution

The fourth proportional to 508,440.78, 701,634.90 and 278,997.36 is: 385,009.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,440.78 : 701,634.90 = 278,997.36 : x
  2. Step 2: Convert to fraction form
    508,440.78/701,634.90 = 278,997.36/x
  3. Step 3: Cross multiply
    508,440.78x = 701,634.90 × 278,997.36
  4. Step 4: Simplify right side
    508,440.78x = 195,754,284,783.86
  5. Step 5: Solve for x
    x = 195,754,284,783.86/508,440.78
  6. Step 6: Final answer
    x = 385,009.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.