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Finding the Fourth Proportional to 490,496.94, 676,888.11 and 286,559.46

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Solution

The fourth proportional to 490,496.94, 676,888.11 and 286,559.46 is: 395,453.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,496.94 : 676,888.11 = 286,559.46 : x
  2. Step 2: Convert to fraction form
    490,496.94/676,888.11 = 286,559.46/x
  3. Step 3: Cross multiply
    490,496.94x = 676,888.11 × 286,559.46
  4. Step 4: Simplify right side
    490,496.94x = 193,968,691,282.02
  5. Step 5: Solve for x
    x = 193,968,691,282.02/490,496.94
  6. Step 6: Final answer
    x = 395,453.42

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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.