Home / 931,450.40-1,397,175.60-300,384.80

Finding the Fourth Proportional to 931,450.40, 1,397,175.60 and 300,384.80

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Solution

The fourth proportional to 931,450.40, 1,397,175.60 and 300,384.80 is: 450,577.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    931,450.40 : 1,397,175.60 = 300,384.80 : x
  2. Step 2: Convert to fraction form
    931,450.40/1,397,175.60 = 300,384.80/x
  3. Step 3: Cross multiply
    931,450.40x = 1,397,175.60 × 300,384.80
  4. Step 4: Simplify right side
    931,450.40x = 419,690,313,170.88
  5. Step 5: Solve for x
    x = 419,690,313,170.88/931,450.40
  6. Step 6: Final answer
    x = 450,577.20

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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.