Home / 725,190.78-1,087,478.63-345,672.48

Finding the Fourth Proportional to 725,190.78, 1,087,478.63 and 345,672.48

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Solution

The fourth proportional to 725,190.78, 1,087,478.63 and 345,672.48 is: 518,362.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,190.78 : 1,087,478.63 = 345,672.48 : x
  2. Step 2: Convert to fraction form
    725,190.78/1,087,478.63 = 345,672.48/x
  3. Step 3: Cross multiply
    725,190.78x = 1,087,478.63 × 345,672.48
  4. Step 4: Simplify right side
    725,190.78x = 375,911,433,250.74
  5. Step 5: Solve for x
    x = 375,911,433,250.74/725,190.78
  6. Step 6: Final answer
    x = 518,362.12

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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.