Home / 1,222,867-1,687,556.46-686,323

Finding the Fourth Proportional to 1,222,867, 1,687,556.46 and 686,323

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Solution

The fourth proportional to 1,222,867, 1,687,556.46 and 686,323 is: 947,125.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,222,867 : 1,687,556.46 = 686,323 : x
  2. Step 2: Convert to fraction form
    1,222,867/1,687,556.46 = 686,323/x
  3. Step 3: Cross multiply
    1,222,867x = 1,687,556.46 × 686,323
  4. Step 4: Simplify right side
    1,222,867x = 1,158,208,812,296.58
  5. Step 5: Solve for x
    x = 1,158,208,812,296.58/1,222,867
  6. Step 6: Final answer
    x = 947,125.74

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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.