Home / 499,427.45-689,245.06-281,655.61

Finding the Fourth Proportional to 499,427.45, 689,245.06 and 281,655.61

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Solution

The fourth proportional to 499,427.45, 689,245.06 and 281,655.61 is: 388,704.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,427.45 : 689,245.06 = 281,655.61 : x
  2. Step 2: Convert to fraction form
    499,427.45/689,245.06 = 281,655.61/x
  3. Step 3: Cross multiply
    499,427.45x = 689,245.06 × 281,655.61
  4. Step 4: Simplify right side
    499,427.45x = 194,129,736,794.81
  5. Step 5: Solve for x
    x = 194,129,736,794.81/499,427.45
  6. Step 6: Final answer
    x = 388,704.58

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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.