Home / 1,891,120-2,609,745.60-1,212,056.50

Finding the Fourth Proportional to 1,891,120, 2,609,745.60 and 1,212,056.50

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Solution

The fourth proportional to 1,891,120, 2,609,745.60 and 1,212,056.50 is: 1,672,637.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,891,120 : 2,609,745.60 = 1,212,056.50 : x
  2. Step 2: Convert to fraction form
    1,891,120/2,609,745.60 = 1,212,056.50/x
  3. Step 3: Cross multiply
    1,891,120x = 2,609,745.60 × 1,212,056.50
  4. Step 4: Simplify right side
    1,891,120x = 3,163,159,117,826.40
  5. Step 5: Solve for x
    x = 3,163,159,117,826.40/1,891,120
  6. Step 6: Final answer
    x = 1,672,637.97

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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.