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Finding the Fourth Proportional to 633,043.72, 873,659.70 and 378,389.44

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Solution

The fourth proportional to 633,043.72, 873,659.70 and 378,389.44 is: 522,212.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    633,043.72 : 873,659.70 = 378,389.44 : x
  2. Step 2: Convert to fraction form
    633,043.72/873,659.70 = 378,389.44/x
  3. Step 3: Cross multiply
    633,043.72x = 873,659.70 × 378,389.44
  4. Step 4: Simplify right side
    633,043.72x = 330,583,604,633.57
  5. Step 5: Solve for x
    x = 330,583,604,633.57/633,043.72
  6. Step 6: Final answer
    x = 522,212.91

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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.