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Finding the Fourth Proportional to 489,703.95, 675,857.40 and 274,855.77

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Solution

The fourth proportional to 489,703.95, 675,857.40 and 274,855.77 is: 379,337.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,703.95 : 675,857.40 = 274,855.77 : x
  2. Step 2: Convert to fraction form
    489,703.95/675,857.40 = 274,855.77/x
  3. Step 3: Cross multiply
    489,703.95x = 675,857.40 × 274,855.77
  4. Step 4: Simplify right side
    489,703.95x = 185,763,306,087.20
  5. Step 5: Solve for x
    x = 185,763,306,087.20/489,703.95
  6. Step 6: Final answer
    x = 379,337.98

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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.