Home / 1,211,409.45-1,671,756.25-667,564.70

Finding the Fourth Proportional to 1,211,409.45, 1,671,756.25 and 667,564.70

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Solution

The fourth proportional to 1,211,409.45, 1,671,756.25 and 667,564.70 is: 921,245.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,211,409.45 : 1,671,756.25 = 667,564.70 : x
  2. Step 2: Convert to fraction form
    1,211,409.45/1,671,756.25 = 667,564.70/x
  3. Step 3: Cross multiply
    1,211,409.45x = 1,671,756.25 × 667,564.70
  4. Step 4: Simplify right side
    1,211,409.45x = 1,116,005,465,299.22
  5. Step 5: Solve for x
    x = 1,116,005,465,299.22/1,211,409.45
  6. Step 6: Final answer
    x = 921,245.47

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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.