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Finding the Fourth Proportional to 555,082.50, 766,013.85 and 300,435.78

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Solution

The fourth proportional to 555,082.50, 766,013.85 and 300,435.78 is: 414,601.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,082.50 : 766,013.85 = 300,435.78 : x
  2. Step 2: Convert to fraction form
    555,082.50/766,013.85 = 300,435.78/x
  3. Step 3: Cross multiply
    555,082.50x = 766,013.85 × 300,435.78
  4. Step 4: Simplify right side
    555,082.50x = 230,137,968,515.55
  5. Step 5: Solve for x
    x = 230,137,968,515.55/555,082.50
  6. Step 6: Final answer
    x = 414,601.38

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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.