Home / 2,178,137.79-3,005,399.70-1,318,778.01

Finding the Fourth Proportional to 2,178,137.79, 3,005,399.70 and 1,318,778.01

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Solution

The fourth proportional to 2,178,137.79, 3,005,399.70 and 1,318,778.01 is: 1,819,653.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,178,137.79 : 3,005,399.70 = 1,318,778.01 : x
  2. Step 2: Convert to fraction form
    2,178,137.79/3,005,399.70 = 1,318,778.01/x
  3. Step 3: Cross multiply
    2,178,137.79x = 3,005,399.70 × 1,318,778.01
  4. Step 4: Simplify right side
    2,178,137.79x = 3,963,455,035,620.60
  5. Step 5: Solve for x
    x = 3,963,455,035,620.60/2,178,137.79
  6. Step 6: Final answer
    x = 1,819,653.03

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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.