Home / 728,878,009.20-1,093,412,917.80-269,139,116.40

Finding the Fourth Proportional to 728,878,009.20, 1,093,412,917.80 and 269,139,116.40

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Solution

The fourth proportional to 728,878,009.20, 1,093,412,917.80 and 269,139,116.40 is: 403,744,087.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,878,009.20 : 1,093,412,917.80 = 269,139,116.40 : x
  2. Step 2: Convert to fraction form
    728,878,009.20/1,093,412,917.80 = 269,139,116.40/x
  3. Step 3: Cross multiply
    728,878,009.20x = 1,093,412,917.80 × 269,139,116.40
  4. Step 4: Simplify right side
    728,878,009.20x = 294,280,186,557,037,824
  5. Step 5: Solve for x
    x = 294,280,186,557,037,824/728,878,009.20
  6. Step 6: Final answer
    x = 403,744,087.27

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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.