Home / 1,231,465.40-1,699,405.86-687,610.28

Finding the Fourth Proportional to 1,231,465.40, 1,699,405.86 and 687,610.28

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Solution

The fourth proportional to 1,231,465.40, 1,699,405.86 and 687,610.28 is: 948,893.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,231,465.40 : 1,699,405.86 = 687,610.28 : x
  2. Step 2: Convert to fraction form
    1,231,465.40/1,699,405.86 = 687,610.28/x
  3. Step 3: Cross multiply
    1,231,465.40x = 1,699,405.86 × 687,610.28
  4. Step 4: Simplify right side
    1,231,465.40x = 1,168,528,939,228.24
  5. Step 5: Solve for x
    x = 1,168,528,939,228.24/1,231,465.40
  6. Step 6: Final answer
    x = 948,893.03

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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.