Home / 515,849.08-711,871.74-289,494.52

Finding the Fourth Proportional to 515,849.08, 711,871.74 and 289,494.52

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Solution

The fourth proportional to 515,849.08, 711,871.74 and 289,494.52 is: 399,502.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,849.08 : 711,871.74 = 289,494.52 : x
  2. Step 2: Convert to fraction form
    515,849.08/711,871.74 = 289,494.52/x
  3. Step 3: Cross multiply
    515,849.08x = 711,871.74 × 289,494.52
  4. Step 4: Simplify right side
    515,849.08x = 206,082,967,672.87
  5. Step 5: Solve for x
    x = 206,082,967,672.87/515,849.08
  6. Step 6: Final answer
    x = 399,502.44

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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.