Home / 1,223,140.14-1,687,989.44-679,278.33

Finding the Fourth Proportional to 1,223,140.14, 1,687,989.44 and 679,278.33

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Solution

The fourth proportional to 1,223,140.14, 1,687,989.44 and 679,278.33 is: 937,435.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,223,140.14 : 1,687,989.44 = 679,278.33 : x
  2. Step 2: Convert to fraction form
    1,223,140.14/1,687,989.44 = 679,278.33/x
  3. Step 3: Cross multiply
    1,223,140.14x = 1,687,989.44 × 679,278.33
  4. Step 4: Simplify right side
    1,223,140.14x = 1,146,614,649,559.03
  5. Step 5: Solve for x
    x = 1,146,614,649,559.03/1,223,140.14
  6. Step 6: Final answer
    x = 937,435.22

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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.