Home / 920,860.68-1,270,983.78-618,879.72

Finding the Fourth Proportional to 920,860.68, 1,270,983.78 and 618,879.72

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Solution

The fourth proportional to 920,860.68, 1,270,983.78 and 618,879.72 is: 854,185.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,860.68 : 1,270,983.78 = 618,879.72 : x
  2. Step 2: Convert to fraction form
    920,860.68/1,270,983.78 = 618,879.72/x
  3. Step 3: Cross multiply
    920,860.68x = 1,270,983.78 × 618,879.72
  4. Step 4: Simplify right side
    920,860.68x = 786,586,085,890.94
  5. Step 5: Solve for x
    x = 786,586,085,890.94/920,860.68
  6. Step 6: Final answer
    x = 854,185.77

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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.