Home / 649,105.92-895,800.45-391,064.09

Finding the Fourth Proportional to 649,105.92, 895,800.45 and 391,064.09

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Solution

The fourth proportional to 649,105.92, 895,800.45 and 391,064.09 is: 539,689.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    649,105.92 : 895,800.45 = 391,064.09 : x
  2. Step 2: Convert to fraction form
    649,105.92/895,800.45 = 391,064.09/x
  3. Step 3: Cross multiply
    649,105.92x = 895,800.45 × 391,064.09
  4. Step 4: Simplify right side
    649,105.92x = 350,315,384,788.33
  5. Step 5: Solve for x
    x = 350,315,384,788.33/649,105.92
  6. Step 6: Final answer
    x = 539,689.09

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.