Home / 2,118,912.10-3,178,297.80-920,835.56

Finding the Fourth Proportional to 2,118,912.10, 3,178,297.80 and 920,835.56

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Solution

The fourth proportional to 2,118,912.10, 3,178,297.80 and 920,835.56 is: 1,381,222.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,118,912.10 : 3,178,297.80 = 920,835.56 : x
  2. Step 2: Convert to fraction form
    2,118,912.10/3,178,297.80 = 920,835.56/x
  3. Step 3: Cross multiply
    2,118,912.10x = 3,178,297.80 × 920,835.56
  4. Step 4: Simplify right side
    2,118,912.10x = 2,926,689,642,455.51
  5. Step 5: Solve for x
    x = 2,926,689,642,455.51/2,118,912.10
  6. Step 6: Final answer
    x = 1,381,222.77

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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.