Home / 1,389,431.80-2,083,629.30-547,809.40

Finding the Fourth Proportional to 1,389,431.80, 2,083,629.30 and 547,809.40

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Solution

The fourth proportional to 1,389,431.80, 2,083,629.30 and 547,809.40 is: 821,509.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,389,431.80 : 2,083,629.30 = 547,809.40 : x
  2. Step 2: Convert to fraction form
    1,389,431.80/2,083,629.30 = 547,809.40/x
  3. Step 3: Cross multiply
    1,389,431.80x = 2,083,629.30 × 547,809.40
  4. Step 4: Simplify right side
    1,389,431.80x = 1,141,431,716,655.42
  5. Step 5: Solve for x
    x = 1,141,431,716,655.42/1,389,431.80
  6. Step 6: Final answer
    x = 821,509.71

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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.