Home / 680,630.10-1,021,929.30-513,324.60

Finding the Fourth Proportional to 680,630.10, 1,021,929.30 and 513,324.60

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Solution

The fourth proportional to 680,630.10, 1,021,929.30 and 513,324.60 is: 770,729.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,630.10 : 1,021,929.30 = 513,324.60 : x
  2. Step 2: Convert to fraction form
    680,630.10/1,021,929.30 = 513,324.60/x
  3. Step 3: Cross multiply
    680,630.10x = 1,021,929.30 × 513,324.60
  4. Step 4: Simplify right side
    680,630.10x = 524,581,449,150.78
  5. Step 5: Solve for x
    x = 524,581,449,150.78/680,630.10
  6. Step 6: Final answer
    x = 770,729.14

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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.