Home / 919,920.40-1,379,783.55-246,069.70

Finding the Fourth Proportional to 919,920.40, 1,379,783.55 and 246,069.70

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Solution

The fourth proportional to 919,920.40, 1,379,783.55 and 246,069.70 is: 369,078.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,920.40 : 1,379,783.55 = 246,069.70 : x
  2. Step 2: Convert to fraction form
    919,920.40/1,379,783.55 = 246,069.70/x
  3. Step 3: Cross multiply
    919,920.40x = 1,379,783.55 × 246,069.70
  4. Step 4: Simplify right side
    919,920.40x = 339,522,924,213.44
  5. Step 5: Solve for x
    x = 339,522,924,213.44/919,920.40
  6. Step 6: Final answer
    x = 369,078.59

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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.