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Finding the Fourth Proportional to 470,628.32, 649,561.56 and 279,604.88

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Solution

The fourth proportional to 470,628.32, 649,561.56 and 279,604.88 is: 385,910.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    470,628.32 : 649,561.56 = 279,604.88 : x
  2. Step 2: Convert to fraction form
    470,628.32/649,561.56 = 279,604.88/x
  3. Step 3: Cross multiply
    470,628.32x = 649,561.56 × 279,604.88
  4. Step 4: Simplify right side
    470,628.32x = 181,620,582,036.41
  5. Step 5: Solve for x
    x = 181,620,582,036.41/470,628.32
  6. Step 6: Final answer
    x = 385,910.86

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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.