Home / 1,222,284.61-1,686,720.54-678,419.02

Finding the Fourth Proportional to 1,222,284.61, 1,686,720.54 and 678,419.02

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Solution

The fourth proportional to 1,222,284.61, 1,686,720.54 and 678,419.02 is: 936,200.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,222,284.61 : 1,686,720.54 = 678,419.02 : x
  2. Step 2: Convert to fraction form
    1,222,284.61/1,686,720.54 = 678,419.02/x
  3. Step 3: Cross multiply
    1,222,284.61x = 1,686,720.54 × 678,419.02
  4. Step 4: Simplify right side
    1,222,284.61x = 1,144,303,295,760.67
  5. Step 5: Solve for x
    x = 1,144,303,295,760.67/1,222,284.61
  6. Step 6: Final answer
    x = 936,200.36

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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.