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Finding the Fourth Proportional to 479,765.80, 718,086.39 and 353,356.30

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Solution

The fourth proportional to 479,765.80, 718,086.39 and 353,356.30 is: 528,883.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,765.80 : 718,086.39 = 353,356.30 : x
  2. Step 2: Convert to fraction form
    479,765.80/718,086.39 = 353,356.30/x
  3. Step 3: Cross multiply
    479,765.80x = 718,086.39 × 353,356.30
  4. Step 4: Simplify right side
    479,765.80x = 253,740,349,850.76
  5. Step 5: Solve for x
    x = 253,740,349,850.76/479,765.80
  6. Step 6: Final answer
    x = 528,883.78

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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.