Home / 1,179,085.40-1,769,001.90-420,910.60

Finding the Fourth Proportional to 1,179,085.40, 1,769,001.90 and 420,910.60

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Solution

The fourth proportional to 1,179,085.40, 1,769,001.90 and 420,910.60 is: 631,499.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,179,085.40 : 1,769,001.90 = 420,910.60 : x
  2. Step 2: Convert to fraction form
    1,179,085.40/1,769,001.90 = 420,910.60/x
  3. Step 3: Cross multiply
    1,179,085.40x = 1,769,001.90 × 420,910.60
  4. Step 4: Simplify right side
    1,179,085.40x = 744,591,651,130.14
  5. Step 5: Solve for x
    x = 744,591,651,130.14/1,179,085.40
  6. Step 6: Final answer
    x = 631,499.34

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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.