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Finding the Fourth Proportional to 644,090.34, 888,872.43 and 357,610.44

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Solution

The fourth proportional to 644,090.34, 888,872.43 and 357,610.44 is: 493,517.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,090.34 : 888,872.43 = 357,610.44 : x
  2. Step 2: Convert to fraction form
    644,090.34/888,872.43 = 357,610.44/x
  3. Step 3: Cross multiply
    644,090.34x = 888,872.43 × 357,610.44
  4. Step 4: Simplify right side
    644,090.34x = 317,870,059,008.12
  5. Step 5: Solve for x
    x = 317,870,059,008.12/644,090.34
  6. Step 6: Final answer
    x = 493,517.82

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1.5x scale

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.