Home / 501,165,418.86-691,612,997.67-281,153,568.78

Finding the Fourth Proportional to 501,165,418.86, 691,612,997.67 and 281,153,568.78

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Solution

The fourth proportional to 501,165,418.86, 691,612,997.67 and 281,153,568.78 is: 387,994,572.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    501,165,418.86 : 691,612,997.67 = 281,153,568.78 : x
  2. Step 2: Convert to fraction form
    501,165,418.86/691,612,997.67 = 281,153,568.78/x
  3. Step 3: Cross multiply
    501,165,418.86x = 691,612,997.67 × 281,153,568.78
  4. Step 4: Simplify right side
    501,165,418.86x = 194,449,462,509,554,304
  5. Step 5: Solve for x
    x = 194,449,462,509,554,304/501,165,418.86
  6. Step 6: Final answer
    x = 387,994,572.63

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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.