Home / 1,315,961.40-1,971,317.70-685,230.60

Finding the Fourth Proportional to 1,315,961.40, 1,971,317.70 and 685,230.60

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Solution

The fourth proportional to 1,315,961.40, 1,971,317.70 and 685,230.60 is: 1,026,479.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,315,961.40 : 1,971,317.70 = 685,230.60 : x
  2. Step 2: Convert to fraction form
    1,315,961.40/1,971,317.70 = 685,230.60/x
  3. Step 3: Cross multiply
    1,315,961.40x = 1,971,317.70 × 685,230.60
  4. Step 4: Simplify right side
    1,315,961.40x = 1,350,807,210,361.62
  5. Step 5: Solve for x
    x = 1,350,807,210,361.62/1,315,961.40
  6. Step 6: Final answer
    x = 1,026,479.36

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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.