Home / 812,465.39-1,121,188.54-449,881.47

Finding the Fourth Proportional to 812,465.39, 1,121,188.54 and 449,881.47

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Solution

The fourth proportional to 812,465.39, 1,121,188.54 and 449,881.47 is: 620,828.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,465.39 : 1,121,188.54 = 449,881.47 : x
  2. Step 2: Convert to fraction form
    812,465.39/1,121,188.54 = 449,881.47/x
  3. Step 3: Cross multiply
    812,465.39x = 1,121,188.54 × 449,881.47
  4. Step 4: Simplify right side
    812,465.39x = 504,401,945,404.15
  5. Step 5: Solve for x
    x = 504,401,945,404.15/812,465.39
  6. Step 6: Final answer
    x = 620,828.84

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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.