Home / 1,290,495.61-1,780,791.38-709,759.02

Finding the Fourth Proportional to 1,290,495.61, 1,780,791.38 and 709,759.02

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Solution

The fourth proportional to 1,290,495.61, 1,780,791.38 and 709,759.02 is: 979,416.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,495.61 : 1,780,791.38 = 709,759.02 : x
  2. Step 2: Convert to fraction form
    1,290,495.61/1,780,791.38 = 709,759.02/x
  3. Step 3: Cross multiply
    1,290,495.61x = 1,780,791.38 × 709,759.02
  4. Step 4: Simplify right side
    1,290,495.61x = 1,263,932,750,484.02
  5. Step 5: Solve for x
    x = 1,263,932,750,484.02/1,290,495.61
  6. Step 6: Final answer
    x = 979,416.54

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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.