Home / 1,400,039.36-2,099,355.70-815,987

Finding the Fourth Proportional to 1,400,039.36, 2,099,355.70 and 815,987

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Solution

The fourth proportional to 1,400,039.36, 2,099,355.70 and 815,987 is: 1,223,570.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,400,039.36 : 2,099,355.70 = 815,987 : x
  2. Step 2: Convert to fraction form
    1,400,039.36/2,099,355.70 = 815,987/x
  3. Step 3: Cross multiply
    1,400,039.36x = 2,099,355.70 × 815,987
  4. Step 4: Simplify right side
    1,400,039.36x = 1,713,046,959,575.90
  5. Step 5: Solve for x
    x = 1,713,046,959,575.90/1,400,039.36
  6. Step 6: Final answer
    x = 1,223,570.57

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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.