Home / 539,021.20-808,013.40-419,011.60

Finding the Fourth Proportional to 539,021.20, 808,013.40 and 419,011.60

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Solution

The fourth proportional to 539,021.20, 808,013.40 and 419,011.60 is: 628,114.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,021.20 : 808,013.40 = 419,011.60 : x
  2. Step 2: Convert to fraction form
    539,021.20/808,013.40 = 419,011.60/x
  3. Step 3: Cross multiply
    539,021.20x = 808,013.40 × 419,011.60
  4. Step 4: Simplify right side
    539,021.20x = 338,566,987,555.44
  5. Step 5: Solve for x
    x = 338,566,987,555.44/539,021.20
  6. Step 6: Final answer
    x = 628,114.42

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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.