Home / 2,128,117.46-3,192,086.78-990,488.35

Finding the Fourth Proportional to 2,128,117.46, 3,192,086.78 and 990,488.35

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Solution

The fourth proportional to 2,128,117.46, 3,192,086.78 and 990,488.35 is: 1,485,690.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,128,117.46 : 3,192,086.78 = 990,488.35 : x
  2. Step 2: Convert to fraction form
    2,128,117.46/3,192,086.78 = 990,488.35/x
  3. Step 3: Cross multiply
    2,128,117.46x = 3,192,086.78 × 990,488.35
  4. Step 4: Simplify right side
    2,128,117.46x = 3,161,724,770,531.01
  5. Step 5: Solve for x
    x = 3,161,724,770,531.01/2,128,117.46
  6. Step 6: Final answer
    x = 1,485,690.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.