Home / 1,214,666.40-1,821,999.60-931,231.20

Finding the Fourth Proportional to 1,214,666.40, 1,821,999.60 and 931,231.20

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Solution

The fourth proportional to 1,214,666.40, 1,821,999.60 and 931,231.20 is: 1,396,846.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,214,666.40 : 1,821,999.60 = 931,231.20 : x
  2. Step 2: Convert to fraction form
    1,214,666.40/1,821,999.60 = 931,231.20/x
  3. Step 3: Cross multiply
    1,214,666.40x = 1,821,999.60 × 931,231.20
  4. Step 4: Simplify right side
    1,214,666.40x = 1,696,702,873,907.52
  5. Step 5: Solve for x
    x = 1,696,702,873,907.52/1,214,666.40
  6. Step 6: Final answer
    x = 1,396,846.80

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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.