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Finding the Fourth Proportional to 557,866.45, 770,226.44 and 428,574.64

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Solution

The fourth proportional to 557,866.45, 770,226.44 and 428,574.64 is: 591,717.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,866.45 : 770,226.44 = 428,574.64 : x
  2. Step 2: Convert to fraction form
    557,866.45/770,226.44 = 428,574.64/x
  3. Step 3: Cross multiply
    557,866.45x = 770,226.44 × 428,574.64
  4. Step 4: Simplify right side
    557,866.45x = 330,099,519,241.48
  5. Step 5: Solve for x
    x = 330,099,519,241.48/557,866.45
  6. Step 6: Final answer
    x = 591,717.82

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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.