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Finding the Fourth Proportional to 297,789.80, 415,972.60 and 297,789.80

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Solution

The fourth proportional to 297,789.80, 415,972.60 and 297,789.80 is: 415,972.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    297,789.80 : 415,972.60 = 297,789.80 : x
  2. Step 2: Convert to fraction form
    297,789.80/415,972.60 = 297,789.80/x
  3. Step 3: Cross multiply
    297,789.80x = 415,972.60 × 297,789.80
  4. Step 4: Simplify right side
    297,789.80x = 123,872,397,359.48
  5. Step 5: Solve for x
    x = 123,872,397,359.48/297,789.80
  6. Step 6: Final answer
    x = 415,972.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.