Home / 1,222,348.03-1,686,660.51-678,487.90

Finding the Fourth Proportional to 1,222,348.03, 1,686,660.51 and 678,487.90

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Solution

The fourth proportional to 1,222,348.03, 1,686,660.51 and 678,487.90 is: 936,213.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,222,348.03 : 1,686,660.51 = 678,487.90 : x
  2. Step 2: Convert to fraction form
    1,222,348.03/1,686,660.51 = 678,487.90/x
  3. Step 3: Cross multiply
    1,222,348.03x = 1,686,660.51 × 678,487.90
  4. Step 4: Simplify right side
    1,222,348.03x = 1,144,378,747,442.83
  5. Step 5: Solve for x
    x = 1,144,378,747,442.83/1,222,348.03
  6. Step 6: Final answer
    x = 936,213.52

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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.