Home / 909,190.50-1,363,840.44-278,109.78

Finding the Fourth Proportional to 909,190.50, 1,363,840.44 and 278,109.78

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Solution

The fourth proportional to 909,190.50, 1,363,840.44 and 278,109.78 is: 417,181.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    909,190.50 : 1,363,840.44 = 278,109.78 : x
  2. Step 2: Convert to fraction form
    909,190.50/1,363,840.44 = 278,109.78/x
  3. Step 3: Cross multiply
    909,190.50x = 1,363,840.44 × 278,109.78
  4. Step 4: Simplify right side
    909,190.50x = 379,297,364,723.50
  5. Step 5: Solve for x
    x = 379,297,364,723.50/909,190.50
  6. Step 6: Final answer
    x = 417,181.40

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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.