Home / 1,282,021.20-1,923,031.80-618,469.20

Finding the Fourth Proportional to 1,282,021.20, 1,923,031.80 and 618,469.20

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Solution

The fourth proportional to 1,282,021.20, 1,923,031.80 and 618,469.20 is: 927,703.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,282,021.20 : 1,923,031.80 = 618,469.20 : x
  2. Step 2: Convert to fraction form
    1,282,021.20/1,923,031.80 = 618,469.20/x
  3. Step 3: Cross multiply
    1,282,021.20x = 1,923,031.80 × 618,469.20
  4. Step 4: Simplify right side
    1,282,021.20x = 1,189,335,938,920.56
  5. Step 5: Solve for x
    x = 1,189,335,938,920.56/1,282,021.20
  6. Step 6: Final answer
    x = 927,703.80

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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.