Home / 419,963.70-629,945.55-210,011.70

Finding the Fourth Proportional to 419,963.70, 629,945.55 and 210,011.70

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Solution

The fourth proportional to 419,963.70, 629,945.55 and 210,011.70 is: 315,017.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,963.70 : 629,945.55 = 210,011.70 : x
  2. Step 2: Convert to fraction form
    419,963.70/629,945.55 = 210,011.70/x
  3. Step 3: Cross multiply
    419,963.70x = 629,945.55 × 210,011.70
  4. Step 4: Simplify right side
    419,963.70x = 132,295,935,862.94
  5. Step 5: Solve for x
    x = 132,295,935,862.94/419,963.70
  6. Step 6: Final answer
    x = 315,017.55

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Double scale
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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.