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Finding the Fourth Proportional to 490,277.91, 676,646.71 and 275,459.50

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Solution

The fourth proportional to 490,277.91, 676,646.71 and 275,459.50 is: 380,169.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,277.91 : 676,646.71 = 275,459.50 : x
  2. Step 2: Convert to fraction form
    490,277.91/676,646.71 = 275,459.50/x
  3. Step 3: Cross multiply
    490,277.91x = 676,646.71 × 275,459.50
  4. Step 4: Simplify right side
    490,277.91x = 186,388,762,313.73
  5. Step 5: Solve for x
    x = 186,388,762,313.73/490,277.91
  6. Step 6: Final answer
    x = 380,169.61

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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.