Home / 389,879.55-583,933.59-305,111.43

Finding the Fourth Proportional to 389,879.55, 583,933.59 and 305,111.43

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Solution

The fourth proportional to 389,879.55, 583,933.59 and 305,111.43 is: 456,973.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,879.55 : 583,933.59 = 305,111.43 : x
  2. Step 2: Convert to fraction form
    389,879.55/583,933.59 = 305,111.43/x
  3. Step 3: Cross multiply
    389,879.55x = 583,933.59 × 305,111.43
  4. Step 4: Simplify right side
    389,879.55x = 178,164,812,669.93
  5. Step 5: Solve for x
    x = 178,164,812,669.93/389,879.55
  6. Step 6: Final answer
    x = 456,973.99

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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.