Home / 515,583.90-711,591.29-300,723.95

Finding the Fourth Proportional to 515,583.90, 711,591.29 and 300,723.95

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Solution

The fourth proportional to 515,583.90, 711,591.29 and 300,723.95 is: 415,048.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,583.90 : 711,591.29 = 300,723.95 : x
  2. Step 2: Convert to fraction form
    515,583.90/711,591.29 = 300,723.95/x
  3. Step 3: Cross multiply
    515,583.90x = 711,591.29 × 300,723.95
  4. Step 4: Simplify right side
    515,583.90x = 213,992,543,514.40
  5. Step 5: Solve for x
    x = 213,992,543,514.40/515,583.90
  6. Step 6: Final answer
    x = 415,048.93

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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.