Home / 1,211,465.21-1,671,832.96-667,620.47

Finding the Fourth Proportional to 1,211,465.21, 1,671,832.96 and 667,620.47

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Solution

The fourth proportional to 1,211,465.21, 1,671,832.96 and 667,620.47 is: 921,322.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,211,465.21 : 1,671,832.96 = 667,620.47 : x
  2. Step 2: Convert to fraction form
    1,211,465.21/1,671,832.96 = 667,620.47/x
  3. Step 3: Cross multiply
    1,211,465.21x = 1,671,832.96 × 667,620.47
  4. Step 4: Simplify right side
    1,211,465.21x = 1,116,149,909,027.22
  5. Step 5: Solve for x
    x = 1,116,149,909,027.22/1,211,465.21
  6. Step 6: Final answer
    x = 921,322.30

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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.