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Finding the Fourth Proportional to 550,384.59, 759,529.41 and 305,406.57

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Solution

The fourth proportional to 550,384.59, 759,529.41 and 305,406.57 is: 421,460.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,384.59 : 759,529.41 = 305,406.57 : x
  2. Step 2: Convert to fraction form
    550,384.59/759,529.41 = 305,406.57/x
  3. Step 3: Cross multiply
    550,384.59x = 759,529.41 × 305,406.57
  4. Step 4: Simplify right side
    550,384.59x = 231,965,271,922.22
  5. Step 5: Solve for x
    x = 231,965,271,922.22/550,384.59
  6. Step 6: Final answer
    x = 421,460.33

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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.