Home / 818,680.32-1,228,151.88-345,435.48

Finding the Fourth Proportional to 818,680.32, 1,228,151.88 and 345,435.48

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Solution

The fourth proportional to 818,680.32, 1,228,151.88 and 345,435.48 is: 518,208.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,680.32 : 1,228,151.88 = 345,435.48 : x
  2. Step 2: Convert to fraction form
    818,680.32/1,228,151.88 = 345,435.48/x
  3. Step 3: Cross multiply
    818,680.32x = 1,228,151.88 × 345,435.48
  4. Step 4: Simplify right side
    818,680.32x = 424,247,234,180.70
  5. Step 5: Solve for x
    x = 424,247,234,180.70/818,680.32
  6. Step 6: Final answer
    x = 518,208.66

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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.