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Finding the Fourth Proportional to 392,496.40, 589,435.80 and 303,965.20

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Solution

The fourth proportional to 392,496.40, 589,435.80 and 303,965.20 is: 456,483.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,496.40 : 589,435.80 = 303,965.20 : x
  2. Step 2: Convert to fraction form
    392,496.40/589,435.80 = 303,965.20/x
  3. Step 3: Cross multiply
    392,496.40x = 589,435.80 × 303,965.20
  4. Step 4: Simplify right side
    392,496.40x = 179,167,970,834.16
  5. Step 5: Solve for x
    x = 179,167,970,834.16/392,496.40
  6. Step 6: Final answer
    x = 456,483.09

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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.