Home / 1,222,283.61-1,686,719.16-678,418.02

Finding the Fourth Proportional to 1,222,283.61, 1,686,719.16 and 678,418.02

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Solution

The fourth proportional to 1,222,283.61, 1,686,719.16 and 678,418.02 is: 936,198.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,222,283.61 : 1,686,719.16 = 678,418.02 : x
  2. Step 2: Convert to fraction form
    1,222,283.61/1,686,719.16 = 678,418.02/x
  3. Step 3: Cross multiply
    1,222,283.61x = 1,686,719.16 × 678,418.02
  4. Step 4: Simplify right side
    1,222,283.61x = 1,144,300,672,823.26
  5. Step 5: Solve for x
    x = 1,144,300,672,823.26/1,222,283.61
  6. Step 6: Final answer
    x = 936,198.98

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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.