Home / 1,211,749.80-1,672,205.47-667,886.64

Finding the Fourth Proportional to 1,211,749.80, 1,672,205.47 and 667,886.64

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Solution

The fourth proportional to 1,211,749.80, 1,672,205.47 and 667,886.64 is: 921,678.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,211,749.80 : 1,672,205.47 = 667,886.64 : x
  2. Step 2: Convert to fraction form
    1,211,749.80/1,672,205.47 = 667,886.64/x
  3. Step 3: Cross multiply
    1,211,749.80x = 1,672,205.47 × 667,886.64
  4. Step 4: Simplify right side
    1,211,749.80x = 1,116,843,692,747.92
  5. Step 5: Solve for x
    x = 1,116,843,692,747.92/1,211,749.80
  6. Step 6: Final answer
    x = 921,678.46

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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.