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Finding the Fourth Proportional to 633,869.40, 874,734.75 and 347,388.80

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Solution

The fourth proportional to 633,869.40, 874,734.75 and 347,388.80 is: 479,393.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    633,869.40 : 874,734.75 = 347,388.80 : x
  2. Step 2: Convert to fraction form
    633,869.40/874,734.75 = 347,388.80/x
  3. Step 3: Cross multiply
    633,869.40x = 874,734.75 × 347,388.80
  4. Step 4: Simplify right side
    633,869.40x = 303,873,057,307.64
  5. Step 5: Solve for x
    x = 303,873,057,307.64/633,869.40
  6. Step 6: Final answer
    x = 479,393.80

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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.