Home / 812,200.13-1,120,799.85-449,598.37

Finding the Fourth Proportional to 812,200.13, 1,120,799.85 and 449,598.37

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Solution

The fourth proportional to 812,200.13, 1,120,799.85 and 449,598.37 is: 620,425.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,200.13 : 1,120,799.85 = 449,598.37 : x
  2. Step 2: Convert to fraction form
    812,200.13/1,120,799.85 = 449,598.37/x
  3. Step 3: Cross multiply
    812,200.13x = 1,120,799.85 × 449,598.37
  4. Step 4: Simplify right side
    812,200.13x = 503,909,781,168.25
  5. Step 5: Solve for x
    x = 503,909,781,168.25/812,200.13
  6. Step 6: Final answer
    x = 620,425.63

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Double scale
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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.