Home / 1,245,333.70-1,868,000.55-820,180.90

Finding the Fourth Proportional to 1,245,333.70, 1,868,000.55 and 820,180.90

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Solution

The fourth proportional to 1,245,333.70, 1,868,000.55 and 820,180.90 is: 1,230,271.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,245,333.70 : 1,868,000.55 = 820,180.90 : x
  2. Step 2: Convert to fraction form
    1,245,333.70/1,868,000.55 = 820,180.90/x
  3. Step 3: Cross multiply
    1,245,333.70x = 1,868,000.55 × 820,180.90
  4. Step 4: Simplify right side
    1,245,333.70x = 1,532,098,372,299.50
  5. Step 5: Solve for x
    x = 1,532,098,372,299.50/1,245,333.70
  6. Step 6: Final answer
    x = 1,230,271.35

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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.