Home / 1,222,763.23-1,687,465.96-678,899.05

Finding the Fourth Proportional to 1,222,763.23, 1,687,465.96 and 678,899.05

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Solution

The fourth proportional to 1,222,763.23, 1,687,465.96 and 678,899.05 is: 936,909.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,222,763.23 : 1,687,465.96 = 678,899.05 : x
  2. Step 2: Convert to fraction form
    1,222,763.23/1,687,465.96 = 678,899.05/x
  3. Step 3: Cross multiply
    1,222,763.23x = 1,687,465.96 × 678,899.05
  4. Step 4: Simplify right side
    1,222,763.23x = 1,145,619,035,647.49
  5. Step 5: Solve for x
    x = 1,145,619,035,647.49/1,222,763.23
  6. Step 6: Final answer
    x = 936,909.95

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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.