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Finding the Fourth Proportional to 442,950.80, 611,059.54 and 289,921.64

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Solution

The fourth proportional to 442,950.80, 611,059.54 and 289,921.64 is: 399,952.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,950.80 : 611,059.54 = 289,921.64 : x
  2. Step 2: Convert to fraction form
    442,950.80/611,059.54 = 289,921.64/x
  3. Step 3: Cross multiply
    442,950.80x = 611,059.54 × 289,921.64
  4. Step 4: Simplify right side
    442,950.80x = 177,159,383,974.45
  5. Step 5: Solve for x
    x = 177,159,383,974.45/442,950.80
  6. Step 6: Final answer
    x = 399,952.74

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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.