Home / 2,122,770.80-2,928,676.48-1,388,155.20

Finding the Fourth Proportional to 2,122,770.80, 2,928,676.48 and 1,388,155.20

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Solution

The fourth proportional to 2,122,770.80, 2,928,676.48 and 1,388,155.20 is: 1,915,165.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,122,770.80 : 2,928,676.48 = 1,388,155.20 : x
  2. Step 2: Convert to fraction form
    2,122,770.80/2,928,676.48 = 1,388,155.20/x
  3. Step 3: Cross multiply
    2,122,770.80x = 2,928,676.48 × 1,388,155.20
  4. Step 4: Simplify right side
    2,122,770.80x = 4,065,457,484,829.70
  5. Step 5: Solve for x
    x = 4,065,457,484,829.70/2,122,770.80
  6. Step 6: Final answer
    x = 1,915,165.54

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.