Home / 499,729.12-689,626.30-281,984.02

Finding the Fourth Proportional to 499,729.12, 689,626.30 and 281,984.02

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Solution

The fourth proportional to 499,729.12, 689,626.30 and 281,984.02 is: 389,138.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,729.12 : 689,626.30 = 281,984.02 : x
  2. Step 2: Convert to fraction form
    499,729.12/689,626.30 = 281,984.02/x
  3. Step 3: Cross multiply
    499,729.12x = 689,626.30 × 281,984.02
  4. Step 4: Simplify right side
    499,729.12x = 194,463,596,371.73
  5. Step 5: Solve for x
    x = 194,463,596,371.73/499,729.12
  6. Step 6: Final answer
    x = 389,138.01

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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.