Home / 644,234.21-888,900.05-389,579.93

Finding the Fourth Proportional to 644,234.21, 888,900.05 and 389,579.93

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Solution

The fourth proportional to 644,234.21, 888,900.05 and 389,579.93 is: 537,533.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,234.21 : 888,900.05 = 389,579.93 : x
  2. Step 2: Convert to fraction form
    644,234.21/888,900.05 = 389,579.93/x
  3. Step 3: Cross multiply
    644,234.21x = 888,900.05 × 389,579.93
  4. Step 4: Simplify right side
    644,234.21x = 346,297,617,308.10
  5. Step 5: Solve for x
    x = 346,297,617,308.10/644,234.21
  6. Step 6: Final answer
    x = 537,533.73

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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.