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Finding the Fourth Proportional to 667,415.40, 936,247.80 and 667,415.40

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Solution

The fourth proportional to 667,415.40, 936,247.80 and 667,415.40 is: 936,247.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,415.40 : 936,247.80 = 667,415.40 : x
  2. Step 2: Convert to fraction form
    667,415.40/936,247.80 = 667,415.40/x
  3. Step 3: Cross multiply
    667,415.40x = 936,247.80 × 667,415.40
  4. Step 4: Simplify right side
    667,415.40x = 624,866,199,936.12
  5. Step 5: Solve for x
    x = 624,866,199,936.12/667,415.40
  6. Step 6: Final answer
    x = 936,247.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.