Home / 1,212,071.87-1,672,662.60-728,913.75

Finding the Fourth Proportional to 1,212,071.87, 1,672,662.60 and 728,913.75

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Solution

The fourth proportional to 1,212,071.87, 1,672,662.60 and 728,913.75 is: 1,005,903.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,212,071.87 : 1,672,662.60 = 728,913.75 : x
  2. Step 2: Convert to fraction form
    1,212,071.87/1,672,662.60 = 728,913.75/x
  3. Step 3: Cross multiply
    1,212,071.87x = 1,672,662.60 × 728,913.75
  4. Step 4: Simplify right side
    1,212,071.87x = 1,219,226,768,250.75
  5. Step 5: Solve for x
    x = 1,219,226,768,250.75/1,212,071.87
  6. Step 6: Final answer
    x = 1,005,903.03

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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.