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Finding the Fourth Proportional to 644,054.22, 888,796.80 and 357,575.04

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Solution

The fourth proportional to 644,054.22, 888,796.80 and 357,575.04 is: 493,454.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,054.22 : 888,796.80 = 357,575.04 : x
  2. Step 2: Convert to fraction form
    644,054.22/888,796.80 = 357,575.04/x
  3. Step 3: Cross multiply
    644,054.22x = 888,796.80 × 357,575.04
  4. Step 4: Simplify right side
    644,054.22x = 317,811,551,311.87
  5. Step 5: Solve for x
    x = 317,811,551,311.87/644,054.22
  6. Step 6: Final answer
    x = 493,454.65

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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.