Home / 1,425,403.28-1,966,986.12-780,825.68

Finding the Fourth Proportional to 1,425,403.28, 1,966,986.12 and 780,825.68

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Solution

The fourth proportional to 1,425,403.28, 1,966,986.12 and 780,825.68 is: 1,077,500.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,425,403.28 : 1,966,986.12 = 780,825.68 : x
  2. Step 2: Convert to fraction form
    1,425,403.28/1,966,986.12 = 780,825.68/x
  3. Step 3: Cross multiply
    1,425,403.28x = 1,966,986.12 × 780,825.68
  4. Step 4: Simplify right side
    1,425,403.28x = 1,535,873,274,699.56
  5. Step 5: Solve for x
    x = 1,535,873,274,699.56/1,425,403.28
  6. Step 6: Final answer
    x = 1,077,500.87

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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.