Home / 2,187,040.38-3,018,203.20-1,220,255.16

Finding the Fourth Proportional to 2,187,040.38, 3,018,203.20 and 1,220,255.16

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Solution

The fourth proportional to 2,187,040.38, 3,018,203.20 and 1,220,255.16 is: 1,684,000.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,187,040.38 : 3,018,203.20 = 1,220,255.16 : x
  2. Step 2: Convert to fraction form
    2,187,040.38/3,018,203.20 = 1,220,255.16/x
  3. Step 3: Cross multiply
    2,187,040.38x = 3,018,203.20 × 1,220,255.16
  4. Step 4: Simplify right side
    2,187,040.38x = 3,682,978,028,728.51
  5. Step 5: Solve for x
    x = 3,682,978,028,728.51/2,187,040.38
  6. Step 6: Final answer
    x = 1,684,000.93

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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.