Home / 680,903.80-1,021,355.70-415,183.30

Finding the Fourth Proportional to 680,903.80, 1,021,355.70 and 415,183.30

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Solution

The fourth proportional to 680,903.80, 1,021,355.70 and 415,183.30 is: 622,774.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,903.80 : 1,021,355.70 = 415,183.30 : x
  2. Step 2: Convert to fraction form
    680,903.80/1,021,355.70 = 415,183.30/x
  3. Step 3: Cross multiply
    680,903.80x = 1,021,355.70 × 415,183.30
  4. Step 4: Simplify right side
    680,903.80x = 424,049,829,999.81
  5. Step 5: Solve for x
    x = 424,049,829,999.81/680,903.80
  6. Step 6: Final answer
    x = 622,774.95

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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.