Home / 2,154,055.80-2,972,475.72-1,187,183.12

Finding the Fourth Proportional to 2,154,055.80, 2,972,475.72 and 1,187,183.12

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Solution

The fourth proportional to 2,154,055.80, 2,972,475.72 and 1,187,183.12 is: 1,638,245.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,154,055.80 : 2,972,475.72 = 1,187,183.12 : x
  2. Step 2: Convert to fraction form
    2,154,055.80/2,972,475.72 = 1,187,183.12/x
  3. Step 3: Cross multiply
    2,154,055.80x = 2,972,475.72 × 1,187,183.12
  4. Step 4: Simplify right side
    2,154,055.80x = 3,528,872,999,393.85
  5. Step 5: Solve for x
    x = 3,528,872,999,393.85/2,154,055.80
  6. Step 6: Final answer
    x = 1,638,245.86

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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.