Home / 1,222,349.03-1,686,661.89-678,488.90

Finding the Fourth Proportional to 1,222,349.03, 1,686,661.89 and 678,488.90

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Solution

The fourth proportional to 1,222,349.03, 1,686,661.89 and 678,488.90 is: 936,214.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,222,349.03 : 1,686,661.89 = 678,488.90 : x
  2. Step 2: Convert to fraction form
    1,222,349.03/1,686,661.89 = 678,488.90/x
  3. Step 3: Cross multiply
    1,222,349.03x = 1,686,661.89 × 678,488.90
  4. Step 4: Simplify right side
    1,222,349.03x = 1,144,381,370,418.02
  5. Step 5: Solve for x
    x = 1,144,381,370,418.02/1,222,349.03
  6. Step 6: Final answer
    x = 936,214.90

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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.