Home / 1,211,690.54-1,672,104.06-660,423.78

Finding the Fourth Proportional to 1,211,690.54, 1,672,104.06 and 660,423.78

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Solution

The fourth proportional to 1,211,690.54, 1,672,104.06 and 660,423.78 is: 911,369.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,211,690.54 : 1,672,104.06 = 660,423.78 : x
  2. Step 2: Convert to fraction form
    1,211,690.54/1,672,104.06 = 660,423.78/x
  3. Step 3: Cross multiply
    1,211,690.54x = 1,672,104.06 × 660,423.78
  4. Step 4: Simplify right side
    1,211,690.54x = 1,104,297,283,858.55
  5. Step 5: Solve for x
    x = 1,104,297,283,858.55/1,211,690.54
  6. Step 6: Final answer
    x = 911,369.07

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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.