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Finding the Fourth Proportional to 628,982.70, 943,474.05 and 419,030.70

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Solution

The fourth proportional to 628,982.70, 943,474.05 and 419,030.70 is: 628,546.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,982.70 : 943,474.05 = 419,030.70 : x
  2. Step 2: Convert to fraction form
    628,982.70/943,474.05 = 419,030.70/x
  3. Step 3: Cross multiply
    628,982.70x = 943,474.05 × 419,030.70
  4. Step 4: Simplify right side
    628,982.70x = 395,344,591,603.34
  5. Step 5: Solve for x
    x = 395,344,591,603.34/628,982.70
  6. Step 6: Final answer
    x = 628,546.05

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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.