Home / 1,920,084.38-2,879,162.30-640,238.78

Finding the Fourth Proportional to 1,920,084.38, 2,879,162.30 and 640,238.78

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Solution

The fourth proportional to 1,920,084.38, 2,879,162.30 and 640,238.78 is: 960,036.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,920,084.38 : 2,879,162.30 = 640,238.78 : x
  2. Step 2: Convert to fraction form
    1,920,084.38/2,879,162.30 = 640,238.78/x
  3. Step 3: Cross multiply
    1,920,084.38x = 2,879,162.30 × 640,238.78
  4. Step 4: Simplify right side
    1,920,084.38x = 1,843,351,358,373.99
  5. Step 5: Solve for x
    x = 1,843,351,358,373.99/1,920,084.38
  6. Step 6: Final answer
    x = 960,036.64

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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.