Home / 905,423.85-1,358,135.78-274,369.05

Finding the Fourth Proportional to 905,423.85, 1,358,135.78 and 274,369.05

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Solution

The fourth proportional to 905,423.85, 1,358,135.78 and 274,369.05 is: 411,553.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,423.85 : 1,358,135.78 = 274,369.05 : x
  2. Step 2: Convert to fraction form
    905,423.85/1,358,135.78 = 274,369.05/x
  3. Step 3: Cross multiply
    905,423.85x = 1,358,135.78 × 274,369.05
  4. Step 4: Simplify right side
    905,423.85x = 372,630,422,357.76
  5. Step 5: Solve for x
    x = 372,630,422,357.76/905,423.85
  6. Step 6: Final answer
    x = 411,553.58

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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.