Home / 486,635.40-729,434.70-187,000.20

Finding the Fourth Proportional to 486,635.40, 729,434.70 and 187,000.20

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Solution

The fourth proportional to 486,635.40, 729,434.70 and 187,000.20 is: 280,301.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,635.40 : 729,434.70 = 187,000.20 : x
  2. Step 2: Convert to fraction form
    486,635.40/729,434.70 = 187,000.20/x
  3. Step 3: Cross multiply
    486,635.40x = 729,434.70 × 187,000.20
  4. Step 4: Simplify right side
    486,635.40x = 136,404,434,786.94
  5. Step 5: Solve for x
    x = 136,404,434,786.94/486,635.40
  6. Step 6: Final answer
    x = 280,301.09

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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.