Home / 931,442.40-1,397,163.60-300,376.80

Finding the Fourth Proportional to 931,442.40, 1,397,163.60 and 300,376.80

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Solution

The fourth proportional to 931,442.40, 1,397,163.60 and 300,376.80 is: 450,565.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    931,442.40 : 1,397,163.60 = 300,376.80 : x
  2. Step 2: Convert to fraction form
    931,442.40/1,397,163.60 = 300,376.80/x
  3. Step 3: Cross multiply
    931,442.40x = 1,397,163.60 × 300,376.80
  4. Step 4: Simplify right side
    931,442.40x = 419,675,531,244.48
  5. Step 5: Solve for x
    x = 419,675,531,244.48/931,442.40
  6. Step 6: Final answer
    x = 450,565.20

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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.