Home / 715,110.40-1,072,665.60-378,020.80

Finding the Fourth Proportional to 715,110.40, 1,072,665.60 and 378,020.80

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Solution

The fourth proportional to 715,110.40, 1,072,665.60 and 378,020.80 is: 567,031.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,110.40 : 1,072,665.60 = 378,020.80 : x
  2. Step 2: Convert to fraction form
    715,110.40/1,072,665.60 = 378,020.80/x
  3. Step 3: Cross multiply
    715,110.40x = 1,072,665.60 × 378,020.80
  4. Step 4: Simplify right side
    715,110.40x = 405,489,908,244.48
  5. Step 5: Solve for x
    x = 405,489,908,244.48/715,110.40
  6. Step 6: Final answer
    x = 567,031.20

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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.