Home / 640,197.18-960,399.45-196,861.50

Finding the Fourth Proportional to 640,197.18, 960,399.45 and 196,861.50

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Solution

The fourth proportional to 640,197.18, 960,399.45 and 196,861.50 is: 295,324.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,197.18 : 960,399.45 = 196,861.50 : x
  2. Step 2: Convert to fraction form
    640,197.18/960,399.45 = 196,861.50/x
  3. Step 3: Cross multiply
    640,197.18x = 960,399.45 × 196,861.50
  4. Step 4: Simplify right side
    640,197.18x = 189,065,676,326.18
  5. Step 5: Solve for x
    x = 189,065,676,326.18/640,197.18
  6. Step 6: Final answer
    x = 295,324.13

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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.