Home / 509,557.20-703,228.14-305,615.94

Finding the Fourth Proportional to 509,557.20, 703,228.14 and 305,615.94

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Solution

The fourth proportional to 509,557.20, 703,228.14 and 305,615.94 is: 421,773.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,557.20 : 703,228.14 = 305,615.94 : x
  2. Step 2: Convert to fraction form
    509,557.20/703,228.14 = 305,615.94/x
  3. Step 3: Cross multiply
    509,557.20x = 703,228.14 × 305,615.94
  4. Step 4: Simplify right side
    509,557.20x = 214,917,729,040.55
  5. Step 5: Solve for x
    x = 214,917,729,040.55/509,557.20
  6. Step 6: Final answer
    x = 421,773.51

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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.