Home / 1,352,000.10-2,028,000.15-820,121.70

Finding the Fourth Proportional to 1,352,000.10, 2,028,000.15 and 820,121.70

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Solution

The fourth proportional to 1,352,000.10, 2,028,000.15 and 820,121.70 is: 1,230,182.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,352,000.10 : 2,028,000.15 = 820,121.70 : x
  2. Step 2: Convert to fraction form
    1,352,000.10/2,028,000.15 = 820,121.70/x
  3. Step 3: Cross multiply
    1,352,000.10x = 2,028,000.15 × 820,121.70
  4. Step 4: Simplify right side
    1,352,000.10x = 1,663,206,930,618.26
  5. Step 5: Solve for x
    x = 1,663,206,930,618.26/1,352,000.10
  6. Step 6: Final answer
    x = 1,230,182.55

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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.