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Finding the Fourth Proportional to 870,846.58, 1,306,745.34 and 338,388.22

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Solution

The fourth proportional to 870,846.58, 1,306,745.34 and 338,388.22 is: 507,767.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,846.58 : 1,306,745.34 = 338,388.22 : x
  2. Step 2: Convert to fraction form
    870,846.58/1,306,745.34 = 338,388.22/x
  3. Step 3: Cross multiply
    870,846.58x = 1,306,745.34 × 338,388.22
  4. Step 4: Simplify right side
    870,846.58x = 442,187,229,595.90
  5. Step 5: Solve for x
    x = 442,187,229,595.90/870,846.58
  6. Step 6: Final answer
    x = 507,767.09

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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.