Home / 1,212,644.40-1,819,128.60-413,725.20

Finding the Fourth Proportional to 1,212,644.40, 1,819,128.60 and 413,725.20

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Solution

The fourth proportional to 1,212,644.40, 1,819,128.60 and 413,725.20 is: 620,643.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,212,644.40 : 1,819,128.60 = 413,725.20 : x
  2. Step 2: Convert to fraction form
    1,212,644.40/1,819,128.60 = 413,725.20/x
  3. Step 3: Cross multiply
    1,212,644.40x = 1,819,128.60 × 413,725.20
  4. Step 4: Simplify right side
    1,212,644.40x = 752,619,343,860.72
  5. Step 5: Solve for x
    x = 752,619,343,860.72/1,212,644.40
  6. Step 6: Final answer
    x = 620,643.07

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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.