Home / 2,187,006.91-3,018,071.44-1,220,137.40

Finding the Fourth Proportional to 2,187,006.91, 3,018,071.44 and 1,220,137.40

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Solution

The fourth proportional to 2,187,006.91, 3,018,071.44 and 1,220,137.40 is: 1,683,790.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,187,006.91 : 3,018,071.44 = 1,220,137.40 : x
  2. Step 2: Convert to fraction form
    2,187,006.91/3,018,071.44 = 1,220,137.40/x
  3. Step 3: Cross multiply
    2,187,006.91x = 3,018,071.44 × 1,220,137.40
  4. Step 4: Simplify right side
    2,187,006.91x = 3,682,461,840,397.88
  5. Step 5: Solve for x
    x = 3,682,461,840,397.88/2,187,006.91
  6. Step 6: Final answer
    x = 1,683,790.67

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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.