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Finding the Fourth Proportional to 633,869.90, 874,735.44 and 347,389.31

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Solution

The fourth proportional to 633,869.90, 874,735.44 and 347,389.31 is: 479,394.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    633,869.90 : 874,735.44 = 347,389.31 : x
  2. Step 2: Convert to fraction form
    633,869.90/874,735.44 = 347,389.31/x
  3. Step 3: Cross multiply
    633,869.90x = 874,735.44 × 347,389.31
  4. Step 4: Simplify right side
    633,869.90x = 303,873,736,560.47
  5. Step 5: Solve for x
    x = 303,873,736,560.47/633,869.90
  6. Step 6: Final answer
    x = 479,394.49

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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.