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Finding the Fourth Proportional to 633,442.30, 874,237.34 and 388,383.71

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Solution

The fourth proportional to 633,442.30, 874,237.34 and 388,383.71 is: 536,022.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    633,442.30 : 874,237.34 = 388,383.71 : x
  2. Step 2: Convert to fraction form
    633,442.30/874,237.34 = 388,383.71/x
  3. Step 3: Cross multiply
    633,442.30x = 874,237.34 × 388,383.71
  4. Step 4: Simplify right side
    633,442.30x = 339,539,541,529.73
  5. Step 5: Solve for x
    x = 339,539,541,529.73/633,442.30
  6. Step 6: Final answer
    x = 536,022.84

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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.