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Finding the Fourth Proportional to 557,963.44, 769,989.85 and 303,314.63

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Solution

The fourth proportional to 557,963.44, 769,989.85 and 303,314.63 is: 418,574.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,963.44 : 769,989.85 = 303,314.63 : x
  2. Step 2: Convert to fraction form
    557,963.44/769,989.85 = 303,314.63/x
  3. Step 3: Cross multiply
    557,963.44x = 769,989.85 × 303,314.63
  4. Step 4: Simplify right side
    557,963.44x = 233,549,181,848.27
  5. Step 5: Solve for x
    x = 233,549,181,848.27/557,963.44
  6. Step 6: Final answer
    x = 418,574.35

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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.