Home / 1,284,776.80-1,772,917.90-711,782.80

Finding the Fourth Proportional to 1,284,776.80, 1,772,917.90 and 711,782.80

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Solution

The fourth proportional to 1,284,776.80, 1,772,917.90 and 711,782.80 is: 982,219.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,284,776.80 : 1,772,917.90 = 711,782.80 : x
  2. Step 2: Convert to fraction form
    1,284,776.80/1,772,917.90 = 711,782.80/x
  3. Step 3: Cross multiply
    1,284,776.80x = 1,772,917.90 × 711,782.80
  4. Step 4: Simplify right side
    1,284,776.80x = 1,261,932,467,032.12
  5. Step 5: Solve for x
    x = 1,261,932,467,032.12/1,284,776.80
  6. Step 6: Final answer
    x = 982,219.22

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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.