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Finding the Fourth Proportional to 557,648.46, 769,559.56 and 302,999.64

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Solution

The fourth proportional to 557,648.46, 769,559.56 and 302,999.64 is: 418,142.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,648.46 : 769,559.56 = 302,999.64 : x
  2. Step 2: Convert to fraction form
    557,648.46/769,559.56 = 302,999.64/x
  3. Step 3: Cross multiply
    557,648.46x = 769,559.56 × 302,999.64
  4. Step 4: Simplify right side
    557,648.46x = 233,176,269,638.56
  5. Step 5: Solve for x
    x = 233,176,269,638.56/557,648.46
  6. Step 6: Final answer
    x = 418,142.05

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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.