Home / 1,210,379.88-1,668,763.37-991,775.87

Finding the Fourth Proportional to 1,210,379.88, 1,668,763.37 and 991,775.87

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Solution

The fourth proportional to 1,210,379.88, 1,668,763.37 and 991,775.87 is: 1,367,371.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,210,379.88 : 1,668,763.37 = 991,775.87 : x
  2. Step 2: Convert to fraction form
    1,210,379.88/1,668,763.37 = 991,775.87/x
  3. Step 3: Cross multiply
    1,210,379.88x = 1,668,763.37 × 991,775.87
  4. Step 4: Simplify right side
    1,210,379.88x = 1,655,039,237,241.50
  5. Step 5: Solve for x
    x = 1,655,039,237,241.50/1,210,379.88
  6. Step 6: Final answer
    x = 1,367,371.74

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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.