Home / 939,286.40-1,408,929.60-274,438.40

Finding the Fourth Proportional to 939,286.40, 1,408,929.60 and 274,438.40

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Solution

The fourth proportional to 939,286.40, 1,408,929.60 and 274,438.40 is: 411,657.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    939,286.40 : 1,408,929.60 = 274,438.40 : x
  2. Step 2: Convert to fraction form
    939,286.40/1,408,929.60 = 274,438.40/x
  3. Step 3: Cross multiply
    939,286.40x = 1,408,929.60 × 274,438.40
  4. Step 4: Simplify right side
    939,286.40x = 386,664,385,136.64
  5. Step 5: Solve for x
    x = 386,664,385,136.64/939,286.40
  6. Step 6: Final answer
    x = 411,657.60

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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.