Home / 1,128,758.09-1,693,395.77-489,169.20

Finding the Fourth Proportional to 1,128,758.09, 1,693,395.77 and 489,169.20

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Solution

The fourth proportional to 1,128,758.09, 1,693,395.77 and 489,169.20 is: 733,865.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,128,758.09 : 1,693,395.77 = 489,169.20 : x
  2. Step 2: Convert to fraction form
    1,128,758.09/1,693,395.77 = 489,169.20/x
  3. Step 3: Cross multiply
    1,128,758.09x = 1,693,395.77 × 489,169.20
  4. Step 4: Simplify right side
    1,128,758.09x = 828,357,051,648.44
  5. Step 5: Solve for x
    x = 828,357,051,648.44/1,128,758.09
  6. Step 6: Final answer
    x = 733,865.89

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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.