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Finding the Fourth Proportional to 577,431.88, 866,401.01 and 274,045.15

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Solution

The fourth proportional to 577,431.88, 866,401.01 and 274,045.15 is: 411,187.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,431.88 : 866,401.01 = 274,045.15 : x
  2. Step 2: Convert to fraction form
    577,431.88/866,401.01 = 274,045.15/x
  3. Step 3: Cross multiply
    577,431.88x = 866,401.01 × 274,045.15
  4. Step 4: Simplify right side
    577,431.88x = 237,432,994,745.60
  5. Step 5: Solve for x
    x = 237,432,994,745.60/577,431.88
  6. Step 6: Final answer
    x = 411,187.89

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.