Home / 1,279,691.10-1,920,199.05-522,087.90

Finding the Fourth Proportional to 1,279,691.10, 1,920,199.05 and 522,087.90

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Solution

The fourth proportional to 1,279,691.10, 1,920,199.05 and 522,087.90 is: 783,402.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,279,691.10 : 1,920,199.05 = 522,087.90 : x
  2. Step 2: Convert to fraction form
    1,279,691.10/1,920,199.05 = 522,087.90/x
  3. Step 3: Cross multiply
    1,279,691.10x = 1,920,199.05 × 522,087.90
  4. Step 4: Simplify right side
    1,279,691.10x = 1,002,512,689,596.50
  5. Step 5: Solve for x
    x = 1,002,512,689,596.50/1,279,691.10
  6. Step 6: Final answer
    x = 783,402.10

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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.