Home / 489,138.56-731,868.24-289,552.88

Finding the Fourth Proportional to 489,138.56, 731,868.24 and 289,552.88

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Solution

The fourth proportional to 489,138.56, 731,868.24 and 289,552.88 is: 433,240.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,138.56 : 731,868.24 = 289,552.88 : x
  2. Step 2: Convert to fraction form
    489,138.56/731,868.24 = 289,552.88/x
  3. Step 3: Cross multiply
    489,138.56x = 731,868.24 × 289,552.88
  4. Step 4: Simplify right side
    489,138.56x = 211,914,556,672.53
  5. Step 5: Solve for x
    x = 211,914,556,672.53/489,138.56
  6. Step 6: Final answer
    x = 433,240.34

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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.