Home / 3,120,808-4,305,495.84-1,813,842.88

Finding the Fourth Proportional to 3,120,808, 4,305,495.84 and 1,813,842.88

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Solution

The fourth proportional to 3,120,808, 4,305,495.84 and 1,813,842.88 is: 2,502,394.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,120,808 : 4,305,495.84 = 1,813,842.88 : x
  2. Step 2: Convert to fraction form
    3,120,808/4,305,495.84 = 1,813,842.88/x
  3. Step 3: Cross multiply
    3,120,808x = 4,305,495.84 × 1,813,842.88
  4. Step 4: Simplify right side
    3,120,808x = 7,809,492,974,253.62
  5. Step 5: Solve for x
    x = 7,809,492,974,253.62/3,120,808
  6. Step 6: Final answer
    x = 2,502,394.56

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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.