Home / 1,231,578.36-1,699,574.90-687,709.80

Finding the Fourth Proportional to 1,231,578.36, 1,699,574.90 and 687,709.80

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Solution

The fourth proportional to 1,231,578.36, 1,699,574.90 and 687,709.80 is: 949,037.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,231,578.36 : 1,699,574.90 = 687,709.80 : x
  2. Step 2: Convert to fraction form
    1,231,578.36/1,699,574.90 = 687,709.80/x
  3. Step 3: Cross multiply
    1,231,578.36x = 1,699,574.90 × 687,709.80
  4. Step 4: Simplify right side
    1,231,578.36x = 1,168,814,314,564.02
  5. Step 5: Solve for x
    x = 1,168,814,314,564.02/1,231,578.36
  6. Step 6: Final answer
    x = 949,037.72

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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.