Home / 515,000.38-770,399.43-415,273.18

Finding the Fourth Proportional to 515,000.38, 770,399.43 and 415,273.18

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Solution

The fourth proportional to 515,000.38, 770,399.43 and 415,273.18 is: 621,215.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,000.38 : 770,399.43 = 415,273.18 : x
  2. Step 2: Convert to fraction form
    515,000.38/770,399.43 = 415,273.18/x
  3. Step 3: Cross multiply
    515,000.38x = 770,399.43 × 415,273.18
  4. Step 4: Simplify right side
    515,000.38x = 319,926,221,166.29
  5. Step 5: Solve for x
    x = 319,926,221,166.29/515,000.38
  6. Step 6: Final answer
    x = 621,215.51

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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.