Home / 1,020,391.08-1,410,081.72-765,299.40

Finding the Fourth Proportional to 1,020,391.08, 1,410,081.72 and 765,299.40

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Solution

The fourth proportional to 1,020,391.08, 1,410,081.72 and 765,299.40 is: 1,057,569.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,020,391.08 : 1,410,081.72 = 765,299.40 : x
  2. Step 2: Convert to fraction form
    1,020,391.08/1,410,081.72 = 765,299.40/x
  3. Step 3: Cross multiply
    1,020,391.08x = 1,410,081.72 × 765,299.40
  4. Step 4: Simplify right side
    1,020,391.08x = 1,079,134,694,266.97
  5. Step 5: Solve for x
    x = 1,079,134,694,266.97/1,020,391.08
  6. Step 6: Final answer
    x = 1,057,569.71

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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.