Home / 1,211,388.42-1,671,790.34-667,523.88

Finding the Fourth Proportional to 1,211,388.42, 1,671,790.34 and 667,523.88

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Solution

The fourth proportional to 1,211,388.42, 1,671,790.34 and 667,523.88 is: 921,223.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,211,388.42 : 1,671,790.34 = 667,523.88 : x
  2. Step 2: Convert to fraction form
    1,211,388.42/1,671,790.34 = 667,523.88/x
  3. Step 3: Cross multiply
    1,211,388.42x = 1,671,790.34 × 667,523.88
  4. Step 4: Simplify right side
    1,211,388.42x = 1,115,959,974,303.32
  5. Step 5: Solve for x
    x = 1,115,959,974,303.32/1,211,388.42
  6. Step 6: Final answer
    x = 921,223.91

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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.