Home / 1,231,405.90-1,699,324.02-687,550.92

Finding the Fourth Proportional to 1,231,405.90, 1,699,324.02 and 687,550.92

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Solution

The fourth proportional to 1,231,405.90, 1,699,324.02 and 687,550.92 is: 948,811.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,231,405.90 : 1,699,324.02 = 687,550.92 : x
  2. Step 2: Convert to fraction form
    1,231,405.90/1,699,324.02 = 687,550.92/x
  3. Step 3: Cross multiply
    1,231,405.90x = 1,699,324.02 × 687,550.92
  4. Step 4: Simplify right side
    1,231,405.90x = 1,168,371,793,329.10
  5. Step 5: Solve for x
    x = 1,168,371,793,329.10/1,231,405.90
  6. Step 6: Final answer
    x = 948,811.27

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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.