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Finding the Fourth Proportional to 1,019,946.70, 1,529,920.05 and 918,469.90

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Solution

The fourth proportional to 1,019,946.70, 1,529,920.05 and 918,469.90 is: 1,377,704.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,019,946.70 : 1,529,920.05 = 918,469.90 : x
  2. Step 2: Convert to fraction form
    1,019,946.70/1,529,920.05 = 918,469.90/x
  3. Step 3: Cross multiply
    1,019,946.70x = 1,529,920.05 × 918,469.90
  4. Step 4: Simplify right side
    1,019,946.70x = 1,405,185,515,331.50
  5. Step 5: Solve for x
    x = 1,405,185,515,331.50/1,019,946.70
  6. Step 6: Final answer
    x = 1,377,704.85

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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.