Home / 839,328.40-1,258,991.03-262,995.80

Finding the Fourth Proportional to 839,328.40, 1,258,991.03 and 262,995.80

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Solution

The fourth proportional to 839,328.40, 1,258,991.03 and 262,995.80 is: 394,493.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,328.40 : 1,258,991.03 = 262,995.80 : x
  2. Step 2: Convert to fraction form
    839,328.40/1,258,991.03 = 262,995.80/x
  3. Step 3: Cross multiply
    839,328.40x = 1,258,991.03 × 262,995.80
  4. Step 4: Simplify right side
    839,328.40x = 331,109,351,812.70
  5. Step 5: Solve for x
    x = 331,109,351,812.70/839,328.40
  6. Step 6: Final answer
    x = 394,493.21

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.