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Finding the Fourth Proportional to 508,406.45, 701,577.36 and 278,958.02

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Solution

The fourth proportional to 508,406.45, 701,577.36 and 278,958.02 is: 384,949.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,406.45 : 701,577.36 = 278,958.02 : x
  2. Step 2: Convert to fraction form
    508,406.45/701,577.36 = 278,958.02/x
  3. Step 3: Cross multiply
    508,406.45x = 701,577.36 × 278,958.02
  4. Step 4: Simplify right side
    508,406.45x = 195,710,627,714.54
  5. Step 5: Solve for x
    x = 195,710,627,714.54/508,406.45
  6. Step 6: Final answer
    x = 384,949.15

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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.