Home / 1,979,550.70-2,968,123.20-780,090.55

Finding the Fourth Proportional to 1,979,550.70, 2,968,123.20 and 780,090.55

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Solution

The fourth proportional to 1,979,550.70, 2,968,123.20 and 780,090.55 is: 1,169,661.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,979,550.70 : 2,968,123.20 = 780,090.55 : x
  2. Step 2: Convert to fraction form
    1,979,550.70/2,968,123.20 = 780,090.55/x
  3. Step 3: Cross multiply
    1,979,550.70x = 2,968,123.20 × 780,090.55
  4. Step 4: Simplify right side
    1,979,550.70x = 2,315,404,859,555.76
  5. Step 5: Solve for x
    x = 2,315,404,859,555.76/1,979,550.70
  6. Step 6: Final answer
    x = 1,169,661.81

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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.