Home / 768,589.04-1,153,586.70-389,771.25

Finding the Fourth Proportional to 768,589.04, 1,153,586.70 and 389,771.25

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Solution

The fourth proportional to 768,589.04, 1,153,586.70 and 389,771.25 is: 585,013.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,589.04 : 1,153,586.70 = 389,771.25 : x
  2. Step 2: Convert to fraction form
    768,589.04/1,153,586.70 = 389,771.25/x
  3. Step 3: Cross multiply
    768,589.04x = 1,153,586.70 × 389,771.25
  4. Step 4: Simplify right side
    768,589.04x = 449,634,930,042.38
  5. Step 5: Solve for x
    x = 449,634,930,042.38/768,589.04
  6. Step 6: Final answer
    x = 585,013.46

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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.