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Finding the Fourth Proportional to 452,443.45, 624,215.64 and 289,195.45

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Solution

The fourth proportional to 452,443.45, 624,215.64 and 289,195.45 is: 398,989.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    452,443.45 : 624,215.64 = 289,195.45 : x
  2. Step 2: Convert to fraction form
    452,443.45/624,215.64 = 289,195.45/x
  3. Step 3: Cross multiply
    452,443.45x = 624,215.64 × 289,195.45
  4. Step 4: Simplify right side
    452,443.45x = 180,520,322,906.84
  5. Step 5: Solve for x
    x = 180,520,322,906.84/452,443.45
  6. Step 6: Final answer
    x = 398,989.80

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1.5x scale

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.