Home / 1,289,640.34-1,779,562.36-745,693.80

Finding the Fourth Proportional to 1,289,640.34, 1,779,562.36 and 745,693.80

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Solution

The fourth proportional to 1,289,640.34, 1,779,562.36 and 745,693.80 is: 1,028,975.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,289,640.34 : 1,779,562.36 = 745,693.80 : x
  2. Step 2: Convert to fraction form
    1,289,640.34/1,779,562.36 = 745,693.80/x
  3. Step 3: Cross multiply
    1,289,640.34x = 1,779,562.36 × 745,693.80
  4. Step 4: Simplify right side
    1,289,640.34x = 1,327,008,608,629.60
  5. Step 5: Solve for x
    x = 1,327,008,608,629.60/1,289,640.34
  6. Step 6: Final answer
    x = 1,028,975.73

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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.