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Finding the Fourth Proportional to 504,042.70, 756,064.05 and 379,626.70

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Solution

The fourth proportional to 504,042.70, 756,064.05 and 379,626.70 is: 569,440.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    504,042.70 : 756,064.05 = 379,626.70 : x
  2. Step 2: Convert to fraction form
    504,042.70/756,064.05 = 379,626.70/x
  3. Step 3: Cross multiply
    504,042.70x = 756,064.05 × 379,626.70
  4. Step 4: Simplify right side
    504,042.70x = 287,022,100,290.14
  5. Step 5: Solve for x
    x = 287,022,100,290.14/504,042.70
  6. Step 6: Final answer
    x = 569,440.05

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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.