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Finding the Fourth Proportional to 490,909.88, 677,451.40 and 276,045.37

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Solution

The fourth proportional to 490,909.88, 677,451.40 and 276,045.37 is: 380,940.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,909.88 : 677,451.40 = 276,045.37 : x
  2. Step 2: Convert to fraction form
    490,909.88/677,451.40 = 276,045.37/x
  3. Step 3: Cross multiply
    490,909.88x = 677,451.40 × 276,045.37
  4. Step 4: Simplify right side
    490,909.88x = 187,007,319,986.28
  5. Step 5: Solve for x
    x = 187,007,319,986.28/490,909.88
  6. Step 6: Final answer
    x = 380,940.22

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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.