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Finding the Fourth Proportional to 490,438.86, 676,866.09 and 275,574.25

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Solution

The fourth proportional to 490,438.86, 676,866.09 and 275,574.25 is: 380,326.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,438.86 : 676,866.09 = 275,574.25 : x
  2. Step 2: Convert to fraction form
    490,438.86/676,866.09 = 275,574.25/x
  3. Step 3: Cross multiply
    490,438.86x = 676,866.09 × 275,574.25
  4. Step 4: Simplify right side
    490,438.86x = 186,526,865,102.18
  5. Step 5: Solve for x
    x = 186,526,865,102.18/490,438.86
  6. Step 6: Final answer
    x = 380,326.44

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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.