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Finding the Fourth Proportional to 682,987.85, 942,554.78 and 377,107.65

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Solution

The fourth proportional to 682,987.85, 942,554.78 and 377,107.65 is: 520,425.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    682,987.85 : 942,554.78 = 377,107.65 : x
  2. Step 2: Convert to fraction form
    682,987.85/942,554.78 = 377,107.65/x
  3. Step 3: Cross multiply
    682,987.85x = 942,554.78 × 377,107.65
  4. Step 4: Simplify right side
    682,987.85x = 355,444,617,610.68
  5. Step 5: Solve for x
    x = 355,444,617,610.68/682,987.85
  6. Step 6: Final answer
    x = 520,425.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.