Home / 1,188,644.88-1,783,136.88-389,988.84

Finding the Fourth Proportional to 1,188,644.88, 1,783,136.88 and 389,988.84

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Solution

The fourth proportional to 1,188,644.88, 1,783,136.88 and 389,988.84 is: 585,038.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,644.88 : 1,783,136.88 = 389,988.84 : x
  2. Step 2: Convert to fraction form
    1,188,644.88/1,783,136.88 = 389,988.84/x
  3. Step 3: Cross multiply
    1,188,644.88x = 1,783,136.88 × 389,988.84
  4. Step 4: Simplify right side
    1,188,644.88x = 695,403,483,392.42
  5. Step 5: Solve for x
    x = 695,403,483,392.42/1,188,644.88
  6. Step 6: Final answer
    x = 585,038.89

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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.