Home / 812,200.88-1,120,800.88-449,599.12

Finding the Fourth Proportional to 812,200.88, 1,120,800.88 and 449,599.12

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Solution

The fourth proportional to 812,200.88, 1,120,800.88 and 449,599.12 is: 620,426.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,200.88 : 1,120,800.88 = 449,599.12 : x
  2. Step 2: Convert to fraction form
    812,200.88/1,120,800.88 = 449,599.12/x
  3. Step 3: Cross multiply
    812,200.88x = 1,120,800.88 × 449,599.12
  4. Step 4: Simplify right side
    812,200.88x = 503,911,085,417.23
  5. Step 5: Solve for x
    x = 503,911,085,417.23/812,200.88
  6. Step 6: Final answer
    x = 620,426.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.