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Finding the Fourth Proportional to 633,949.31, 874,871.21 and 347,470.13

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Solution

The fourth proportional to 633,949.31, 874,871.21 and 347,470.13 is: 479,520.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    633,949.31 : 874,871.21 = 347,470.13 : x
  2. Step 2: Convert to fraction form
    633,949.31/874,871.21 = 347,470.13/x
  3. Step 3: Cross multiply
    633,949.31x = 874,871.21 × 347,470.13
  4. Step 4: Simplify right side
    633,949.31x = 303,991,613,071.96
  5. Step 5: Solve for x
    x = 303,991,613,071.96/633,949.31
  6. Step 6: Final answer
    x = 479,520.38

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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.