Home / 1,420,299-1,959,982.29-775,721.79

Finding the Fourth Proportional to 1,420,299, 1,959,982.29 and 775,721.79

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Solution

The fourth proportional to 1,420,299, 1,959,982.29 and 775,721.79 is: 1,070,479.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,420,299 : 1,959,982.29 = 775,721.79 : x
  2. Step 2: Convert to fraction form
    1,420,299/1,959,982.29 = 775,721.79/x
  3. Step 3: Cross multiply
    1,420,299x = 1,959,982.29 × 775,721.79
  4. Step 4: Simplify right side
    1,420,299x = 1,520,400,970,367.10
  5. Step 5: Solve for x
    x = 1,520,400,970,367.10/1,420,299
  6. Step 6: Final answer
    x = 1,070,479.50

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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.