Home / 1,420,012.72-2,128,324.64-819,705.52

Finding the Fourth Proportional to 1,420,012.72, 2,128,324.64 and 819,705.52

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Solution

The fourth proportional to 1,420,012.72, 2,128,324.64 and 819,705.52 is: 1,228,580.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,420,012.72 : 2,128,324.64 = 819,705.52 : x
  2. Step 2: Convert to fraction form
    1,420,012.72/2,128,324.64 = 819,705.52/x
  3. Step 3: Cross multiply
    1,420,012.72x = 2,128,324.64 × 819,705.52
  4. Step 4: Simplify right side
    1,420,012.72x = 1,744,599,455,760.01
  5. Step 5: Solve for x
    x = 1,744,599,455,760.01/1,420,012.72
  6. Step 6: Final answer
    x = 1,228,580.16

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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.