Home / 680,173.58-1,020,391.60-380,991.98

Finding the Fourth Proportional to 680,173.58, 1,020,391.60 and 380,991.98

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Solution

The fourth proportional to 680,173.58, 1,020,391.60 and 380,991.98 is: 571,561.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,173.58 : 1,020,391.60 = 380,991.98 : x
  2. Step 2: Convert to fraction form
    680,173.58/1,020,391.60 = 380,991.98/x
  3. Step 3: Cross multiply
    680,173.58x = 1,020,391.60 × 380,991.98
  4. Step 4: Simplify right side
    680,173.58x = 388,761,016,059.37
  5. Step 5: Solve for x
    x = 388,761,016,059.37/680,173.58
  6. Step 6: Final answer
    x = 571,561.48

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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.