Home / 2,187,006.27-3,018,070.54-1,220,136.76

Finding the Fourth Proportional to 2,187,006.27, 3,018,070.54 and 1,220,136.76

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Solution

The fourth proportional to 2,187,006.27, 3,018,070.54 and 1,220,136.76 is: 1,683,789.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,187,006.27 : 3,018,070.54 = 1,220,136.76 : x
  2. Step 2: Convert to fraction form
    2,187,006.27/3,018,070.54 = 1,220,136.76/x
  3. Step 3: Cross multiply
    2,187,006.27x = 3,018,070.54 × 1,220,136.76
  4. Step 4: Simplify right side
    2,187,006.27x = 3,682,458,810,127.05
  5. Step 5: Solve for x
    x = 3,682,458,810,127.05/2,187,006.27
  6. Step 6: Final answer
    x = 1,683,789.78

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1.5x scale

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.