Home / 1,222,119.60-1,686,543.24-678,290.44

Finding the Fourth Proportional to 1,222,119.60, 1,686,543.24 and 678,290.44

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Solution

The fourth proportional to 1,222,119.60, 1,686,543.24 and 678,290.44 is: 936,050.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,222,119.60 : 1,686,543.24 = 678,290.44 : x
  2. Step 2: Convert to fraction form
    1,222,119.60/1,686,543.24 = 678,290.44/x
  3. Step 3: Cross multiply
    1,222,119.60x = 1,686,543.24 × 678,290.44
  4. Step 4: Simplify right side
    1,222,119.60x = 1,143,966,156,338.63
  5. Step 5: Solve for x
    x = 1,143,966,156,338.63/1,222,119.60
  6. Step 6: Final answer
    x = 936,050.90

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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.