Home / 1,321,354.65-1,982,162.79-422,570.55

Finding the Fourth Proportional to 1,321,354.65, 1,982,162.79 and 422,570.55

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Solution

The fourth proportional to 1,321,354.65, 1,982,162.79 and 422,570.55 is: 633,897.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,321,354.65 : 1,982,162.79 = 422,570.55 : x
  2. Step 2: Convert to fraction form
    1,321,354.65/1,982,162.79 = 422,570.55/x
  3. Step 3: Cross multiply
    1,321,354.65x = 1,982,162.79 × 422,570.55
  4. Step 4: Simplify right side
    1,321,354.65x = 837,603,620,359.84
  5. Step 5: Solve for x
    x = 837,603,620,359.84/1,321,354.65
  6. Step 6: Final answer
    x = 633,897.66

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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.