Home / 690,311.80-1,035,467.70-191,675.80

Finding the Fourth Proportional to 690,311.80, 1,035,467.70 and 191,675.80

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Solution

The fourth proportional to 690,311.80, 1,035,467.70 and 191,675.80 is: 287,513.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,311.80 : 1,035,467.70 = 191,675.80 : x
  2. Step 2: Convert to fraction form
    690,311.80/1,035,467.70 = 191,675.80/x
  3. Step 3: Cross multiply
    690,311.80x = 1,035,467.70 × 191,675.80
  4. Step 4: Simplify right side
    690,311.80x = 198,474,099,771.66
  5. Step 5: Solve for x
    x = 198,474,099,771.66/690,311.80
  6. Step 6: Final answer
    x = 287,513.70

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Similar ratio
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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.