Home / 1,389,429.80-2,083,626.30-547,807.40

Finding the Fourth Proportional to 1,389,429.80, 2,083,626.30 and 547,807.40

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Solution

The fourth proportional to 1,389,429.80, 2,083,626.30 and 547,807.40 is: 821,506.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,389,429.80 : 2,083,626.30 = 547,807.40 : x
  2. Step 2: Convert to fraction form
    1,389,429.80/2,083,626.30 = 547,807.40/x
  3. Step 3: Cross multiply
    1,389,429.80x = 2,083,626.30 × 547,807.40
  4. Step 4: Simplify right side
    1,389,429.80x = 1,141,425,905,974.62
  5. Step 5: Solve for x
    x = 1,141,425,905,974.62/1,389,429.80
  6. Step 6: Final answer
    x = 821,506.71

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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.