Home / 827,137.78-1,240,917.16-485,869.80

Finding the Fourth Proportional to 827,137.78, 1,240,917.16 and 485,869.80

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Solution

The fourth proportional to 827,137.78, 1,240,917.16 and 485,869.80 is: 728,928.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    827,137.78 : 1,240,917.16 = 485,869.80 : x
  2. Step 2: Convert to fraction form
    827,137.78/1,240,917.16 = 485,869.80/x
  3. Step 3: Cross multiply
    827,137.78x = 1,240,917.16 × 485,869.80
  4. Step 4: Simplify right side
    827,137.78x = 602,924,164,926.51
  5. Step 5: Solve for x
    x = 602,924,164,926.51/827,137.78
  6. Step 6: Final answer
    x = 728,928.34

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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.