Home / 668,868.54-1,003,630.86-313,911.42

Finding the Fourth Proportional to 668,868.54, 1,003,630.86 and 313,911.42

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Solution

The fourth proportional to 668,868.54, 1,003,630.86 and 313,911.42 is: 471,021.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,868.54 : 1,003,630.86 = 313,911.42 : x
  2. Step 2: Convert to fraction form
    668,868.54/1,003,630.86 = 313,911.42/x
  3. Step 3: Cross multiply
    668,868.54x = 1,003,630.86 × 313,911.42
  4. Step 4: Simplify right side
    668,868.54x = 315,051,188,418.42
  5. Step 5: Solve for x
    x = 315,051,188,418.42/668,868.54
  6. Step 6: Final answer
    x = 471,021.09

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1.5x scale

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.