Home / 1,288,854.06-1,778,617.89-715,947.54

Finding the Fourth Proportional to 1,288,854.06, 1,778,617.89 and 715,947.54

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Solution

The fourth proportional to 1,288,854.06, 1,778,617.89 and 715,947.54 is: 988,007.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,288,854.06 : 1,778,617.89 = 715,947.54 : x
  2. Step 2: Convert to fraction form
    1,288,854.06/1,778,617.89 = 715,947.54/x
  3. Step 3: Cross multiply
    1,288,854.06x = 1,778,617.89 × 715,947.54
  4. Step 4: Simplify right side
    1,288,854.06x = 1,273,397,102,945.49
  5. Step 5: Solve for x
    x = 1,273,397,102,945.49/1,288,854.06
  6. Step 6: Final answer
    x = 988,007.21

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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.