Home / 1,241,005.15-1,861,512.59-820,187.47

Finding the Fourth Proportional to 1,241,005.15, 1,861,512.59 and 820,187.47

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Solution

The fourth proportional to 1,241,005.15, 1,861,512.59 and 820,187.47 is: 1,230,284.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,241,005.15 : 1,861,512.59 = 820,187.47 : x
  2. Step 2: Convert to fraction form
    1,241,005.15/1,861,512.59 = 820,187.47/x
  3. Step 3: Cross multiply
    1,241,005.15x = 1,861,512.59 × 820,187.47
  4. Step 4: Simplify right side
    1,241,005.15x = 1,526,789,301,329.05
  5. Step 5: Solve for x
    x = 1,526,789,301,329.05/1,241,005.15
  6. Step 6: Final answer
    x = 1,230,284.42

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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.