Home / 1,680,920.22-2,519,469.12-1,478,118.90

Finding the Fourth Proportional to 1,680,920.22, 2,519,469.12 and 1,478,118.90

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Solution

The fourth proportional to 1,680,920.22, 2,519,469.12 and 1,478,118.90 is: 2,215,497.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,680,920.22 : 2,519,469.12 = 1,478,118.90 : x
  2. Step 2: Convert to fraction form
    1,680,920.22/2,519,469.12 = 1,478,118.90/x
  3. Step 3: Cross multiply
    1,680,920.22x = 2,519,469.12 × 1,478,118.90
  4. Step 4: Simplify right side
    1,680,920.22x = 3,724,074,909,247.41
  5. Step 5: Solve for x
    x = 3,724,074,909,247.41/1,680,920.22
  6. Step 6: Final answer
    x = 2,215,497.72

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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.