Home / 499,652.32-689,586.90-281,905.69

Finding the Fourth Proportional to 499,652.32, 689,586.90 and 281,905.69

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Solution

The fourth proportional to 499,652.32, 689,586.90 and 281,905.69 is: 389,067.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,652.32 : 689,586.90 = 281,905.69 : x
  2. Step 2: Convert to fraction form
    499,652.32/689,586.90 = 281,905.69/x
  3. Step 3: Cross multiply
    499,652.32x = 689,586.90 × 281,905.69
  4. Step 4: Simplify right side
    499,652.32x = 194,398,470,859.46
  5. Step 5: Solve for x
    x = 194,398,470,859.46/499,652.32
  6. Step 6: Final answer
    x = 389,067.48

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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.