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Finding the Fourth Proportional to 780,381.48, 1,170,910 and 275,303.56

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Solution

The fourth proportional to 780,381.48, 1,170,910 and 275,303.56 is: 413,074.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,381.48 : 1,170,910 = 275,303.56 : x
  2. Step 2: Convert to fraction form
    780,381.48/1,170,910 = 275,303.56/x
  3. Step 3: Cross multiply
    780,381.48x = 1,170,910 × 275,303.56
  4. Step 4: Simplify right side
    780,381.48x = 322,355,691,439.60
  5. Step 5: Solve for x
    x = 322,355,691,439.60/780,381.48
  6. Step 6: Final answer
    x = 413,074.50

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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.