Home / 780,393.09-1,170,590.10-219,427.59

Finding the Fourth Proportional to 780,393.09, 1,170,590.10 and 219,427.59

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Solution

The fourth proportional to 780,393.09, 1,170,590.10 and 219,427.59 is: 329,141.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,393.09 : 1,170,590.10 = 219,427.59 : x
  2. Step 2: Convert to fraction form
    780,393.09/1,170,590.10 = 219,427.59/x
  3. Step 3: Cross multiply
    780,393.09x = 1,170,590.10 × 219,427.59
  4. Step 4: Simplify right side
    780,393.09x = 256,859,768,087.72
  5. Step 5: Solve for x
    x = 256,859,768,087.72/780,393.09
  6. Step 6: Final answer
    x = 329,141.52

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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.