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Finding the Fourth Proportional to 557,660.07, 769,577.90 and 303,015.51

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Solution

The fourth proportional to 557,660.07, 769,577.90 and 303,015.51 is: 418,165.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,660.07 : 769,577.90 = 303,015.51 : x
  2. Step 2: Convert to fraction form
    557,660.07/769,577.90 = 303,015.51/x
  3. Step 3: Cross multiply
    557,660.07x = 769,577.90 × 303,015.51
  4. Step 4: Simplify right side
    557,660.07x = 233,194,039,853.23
  5. Step 5: Solve for x
    x = 233,194,039,853.23/557,660.07
  6. Step 6: Final answer
    x = 418,165.21

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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.