Home / 2,187,021.79-3,018,091.95-1,220,152.23

Finding the Fourth Proportional to 2,187,021.79, 3,018,091.95 and 1,220,152.23

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Solution

The fourth proportional to 2,187,021.79, 3,018,091.95 and 1,220,152.23 is: 1,683,811.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,187,021.79 : 3,018,091.95 = 1,220,152.23 : x
  2. Step 2: Convert to fraction form
    2,187,021.79/3,018,091.95 = 1,220,152.23/x
  3. Step 3: Cross multiply
    2,187,021.79x = 3,018,091.95 × 1,220,152.23
  4. Step 4: Simplify right side
    2,187,021.79x = 3,682,531,623,137.55
  5. Step 5: Solve for x
    x = 3,682,531,623,137.55/2,187,021.79
  6. Step 6: Final answer
    x = 1,683,811.13

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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.