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Finding the Fourth Proportional to 454,146.40, 626,674.98 and 279,689

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Solution

The fourth proportional to 454,146.40, 626,674.98 and 279,689 is: 385,941.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,146.40 : 626,674.98 = 279,689 : x
  2. Step 2: Convert to fraction form
    454,146.40/626,674.98 = 279,689/x
  3. Step 3: Cross multiply
    454,146.40x = 626,674.98 × 279,689
  4. Step 4: Simplify right side
    454,146.40x = 175,274,098,481.22
  5. Step 5: Solve for x
    x = 175,274,098,481.22/454,146.40
  6. Step 6: Final answer
    x = 385,941.84

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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.