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Finding the Fourth Proportional to 556,780.22, 768,704.94 and 382,650.38

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Solution

The fourth proportional to 556,780.22, 768,704.94 and 382,650.38 is: 528,296.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,780.22 : 768,704.94 = 382,650.38 : x
  2. Step 2: Convert to fraction form
    556,780.22/768,704.94 = 382,650.38/x
  3. Step 3: Cross multiply
    556,780.22x = 768,704.94 × 382,650.38
  4. Step 4: Simplify right side
    556,780.22x = 294,145,233,555.35
  5. Step 5: Solve for x
    x = 294,145,233,555.35/556,780.22
  6. Step 6: Final answer
    x = 528,296.85

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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.