Home / 715,239.93-987,086.55-409,412.37

Finding the Fourth Proportional to 715,239.93, 987,086.55 and 409,412.37

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Solution

The fourth proportional to 715,239.93, 987,086.55 and 409,412.37 is: 565,020.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,239.93 : 987,086.55 = 409,412.37 : x
  2. Step 2: Convert to fraction form
    715,239.93/987,086.55 = 409,412.37/x
  3. Step 3: Cross multiply
    715,239.93x = 987,086.55 × 409,412.37
  4. Step 4: Simplify right side
    715,239.93x = 404,125,443,830.62
  5. Step 5: Solve for x
    x = 404,125,443,830.62/715,239.93
  6. Step 6: Final answer
    x = 565,020.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.