Home / 780,822.72-1,171,130.40-219,900.96

Finding the Fourth Proportional to 780,822.72, 1,171,130.40 and 219,900.96

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Solution

The fourth proportional to 780,822.72, 1,171,130.40 and 219,900.96 is: 329,822.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,822.72 : 1,171,130.40 = 219,900.96 : x
  2. Step 2: Convert to fraction form
    780,822.72/1,171,130.40 = 219,900.96/x
  3. Step 3: Cross multiply
    780,822.72x = 1,171,130.40 × 219,900.96
  4. Step 4: Simplify right side
    780,822.72x = 257,532,699,245.18
  5. Step 5: Solve for x
    x = 257,532,699,245.18/780,822.72
  6. Step 6: Final answer
    x = 329,822.24

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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.