Home / 1,779,164.73-2,668,779.09-642,012.21

Finding the Fourth Proportional to 1,779,164.73, 2,668,779.09 and 642,012.21

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Solution

The fourth proportional to 1,779,164.73, 2,668,779.09 and 642,012.21 is: 963,029.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,779,164.73 : 2,668,779.09 = 642,012.21 : x
  2. Step 2: Convert to fraction form
    1,779,164.73/2,668,779.09 = 642,012.21/x
  3. Step 3: Cross multiply
    1,779,164.73x = 2,668,779.09 × 642,012.21
  4. Step 4: Simplify right side
    1,779,164.73x = 1,713,388,761,572.69
  5. Step 5: Solve for x
    x = 1,713,388,761,572.69/1,779,164.73
  6. Step 6: Final answer
    x = 963,029.86

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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.