Home / 1,289,866.68-1,780,183.98-780,577.56

Finding the Fourth Proportional to 1,289,866.68, 1,780,183.98 and 780,577.56

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Solution

The fourth proportional to 1,289,866.68, 1,780,183.98 and 780,577.56 is: 1,077,298.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,289,866.68 : 1,780,183.98 = 780,577.56 : x
  2. Step 2: Convert to fraction form
    1,289,866.68/1,780,183.98 = 780,577.56/x
  3. Step 3: Cross multiply
    1,289,866.68x = 1,780,183.98 × 780,577.56
  4. Step 4: Simplify right side
    1,289,866.68x = 1,389,571,667,459.49
  5. Step 5: Solve for x
    x = 1,389,571,667,459.49/1,289,866.68
  6. Step 6: Final answer
    x = 1,077,298.68

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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.