Home / 1,065,920.43-1,471,120.22-678,612.12

Finding the Fourth Proportional to 1,065,920.43, 1,471,120.22 and 678,612.12

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Solution

The fourth proportional to 1,065,920.43, 1,471,120.22 and 678,612.12 is: 936,580.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,065,920.43 : 1,471,120.22 = 678,612.12 : x
  2. Step 2: Convert to fraction form
    1,065,920.43/1,471,120.22 = 678,612.12/x
  3. Step 3: Cross multiply
    1,065,920.43x = 1,471,120.22 × 678,612.12
  4. Step 4: Simplify right side
    1,065,920.43x = 998,320,007,876.01
  5. Step 5: Solve for x
    x = 998,320,007,876.01/1,065,920.43
  6. Step 6: Final answer
    x = 936,580.24

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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.