Home / 1,211,219-1,817,109.87-412,507.36

Finding the Fourth Proportional to 1,211,219, 1,817,109.87 and 412,507.36

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Solution

The fourth proportional to 1,211,219, 1,817,109.87 and 412,507.36 is: 618,856.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,211,219 : 1,817,109.87 = 412,507.36 : x
  2. Step 2: Convert to fraction form
    1,211,219/1,817,109.87 = 412,507.36/x
  3. Step 3: Cross multiply
    1,211,219x = 1,817,109.87 × 412,507.36
  4. Step 4: Simplify right side
    1,211,219x = 749,571,195,303.64
  5. Step 5: Solve for x
    x = 749,571,195,303.64/1,211,219
  6. Step 6: Final answer
    x = 618,856.87

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.