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Finding the Fourth Proportional to 555,028.55, 765,941.71 and 300,379.72

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Solution

The fourth proportional to 555,028.55, 765,941.71 and 300,379.72 is: 414,525.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,028.55 : 765,941.71 = 300,379.72 : x
  2. Step 2: Convert to fraction form
    555,028.55/765,941.71 = 300,379.72/x
  3. Step 3: Cross multiply
    555,028.55x = 765,941.71 × 300,379.72
  4. Step 4: Simplify right side
    555,028.55x = 230,073,351,805.46
  5. Step 5: Solve for x
    x = 230,073,351,805.46/555,028.55
  6. Step 6: Final answer
    x = 414,525.26

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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.