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Finding the Fourth Proportional to 456,794.12, 684,955.09 and 200,521.80

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Solution

The fourth proportional to 456,794.12, 684,955.09 and 200,521.80 is: 300,679.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,794.12 : 684,955.09 = 200,521.80 : x
  2. Step 2: Convert to fraction form
    456,794.12/684,955.09 = 200,521.80/x
  3. Step 3: Cross multiply
    456,794.12x = 684,955.09 × 200,521.80
  4. Step 4: Simplify right side
    456,794.12x = 137,348,427,565.96
  5. Step 5: Solve for x
    x = 137,348,427,565.96/456,794.12
  6. Step 6: Final answer
    x = 300,679.06

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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.