Home / 680,418.20-1,020,649.40-200,605.76

Finding the Fourth Proportional to 680,418.20, 1,020,649.40 and 200,605.76

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Solution

The fourth proportional to 680,418.20, 1,020,649.40 and 200,605.76 is: 300,915.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,418.20 : 1,020,649.40 = 200,605.76 : x
  2. Step 2: Convert to fraction form
    680,418.20/1,020,649.40 = 200,605.76/x
  3. Step 3: Cross multiply
    680,418.20x = 1,020,649.40 × 200,605.76
  4. Step 4: Simplify right side
    680,418.20x = 204,748,148,580.54
  5. Step 5: Solve for x
    x = 204,748,148,580.54/680,418.20
  6. Step 6: Final answer
    x = 300,915.16

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1.5x scale

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.