Home / 2,154,311.56-2,972,814.76-1,187,388.64

Finding the Fourth Proportional to 2,154,311.56, 2,972,814.76 and 1,187,388.64

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Solution

The fourth proportional to 2,154,311.56, 2,972,814.76 and 1,187,388.64 is: 1,638,521.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,154,311.56 : 2,972,814.76 = 1,187,388.64 : x
  2. Step 2: Convert to fraction form
    2,154,311.56/2,972,814.76 = 1,187,388.64/x
  3. Step 3: Cross multiply
    2,154,311.56x = 2,972,814.76 × 1,187,388.64
  4. Step 4: Simplify right side
    2,154,311.56x = 3,529,886,474,848.33
  5. Step 5: Solve for x
    x = 3,529,886,474,848.33/2,154,311.56
  6. Step 6: Final answer
    x = 1,638,521.81

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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.