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Finding the Fourth Proportional to 489,712.98, 675,803.90 and 274,853.04

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Solution

The fourth proportional to 489,712.98, 675,803.90 and 274,853.04 is: 379,297.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,712.98 : 675,803.90 = 274,853.04 : x
  2. Step 2: Convert to fraction form
    489,712.98/675,803.90 = 274,853.04/x
  3. Step 3: Cross multiply
    489,712.98x = 675,803.90 × 274,853.04
  4. Step 4: Simplify right side
    489,712.98x = 185,746,756,358.86
  5. Step 5: Solve for x
    x = 185,746,756,358.86/489,712.98
  6. Step 6: Final answer
    x = 379,297.19

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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.