Home / 1,257,136.20-1,885,704.30-458,443.80

Finding the Fourth Proportional to 1,257,136.20, 1,885,704.30 and 458,443.80

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Solution

The fourth proportional to 1,257,136.20, 1,885,704.30 and 458,443.80 is: 687,665.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,257,136.20 : 1,885,704.30 = 458,443.80 : x
  2. Step 2: Convert to fraction form
    1,257,136.20/1,885,704.30 = 458,443.80/x
  3. Step 3: Cross multiply
    1,257,136.20x = 1,885,704.30 × 458,443.80
  4. Step 4: Simplify right side
    1,257,136.20x = 864,489,444,968.34
  5. Step 5: Solve for x
    x = 864,489,444,968.34/1,257,136.20
  6. Step 6: Final answer
    x = 687,665.70

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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.