Home / 866,380.90-1,299,376.95-416,872.21

Finding the Fourth Proportional to 866,380.90, 1,299,376.95 and 416,872.21

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Solution

The fourth proportional to 866,380.90, 1,299,376.95 and 416,872.21 is: 625,214.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    866,380.90 : 1,299,376.95 = 416,872.21 : x
  2. Step 2: Convert to fraction form
    866,380.90/1,299,376.95 = 416,872.21/x
  3. Step 3: Cross multiply
    866,380.90x = 1,299,376.95 × 416,872.21
  4. Step 4: Simplify right side
    866,380.90x = 541,674,140,769.56
  5. Step 5: Solve for x
    x = 541,674,140,769.56/866,380.90
  6. Step 6: Final answer
    x = 625,214.78

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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.