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Finding the Fourth Proportional to 557,796.20, 769,764.72 and 303,147.40

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Solution

The fourth proportional to 557,796.20, 769,764.72 and 303,147.40 is: 418,346.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,796.20 : 769,764.72 = 303,147.40 : x
  2. Step 2: Convert to fraction form
    557,796.20/769,764.72 = 303,147.40/x
  3. Step 3: Cross multiply
    557,796.20x = 769,764.72 × 303,147.40
  4. Step 4: Simplify right side
    557,796.20x = 233,352,173,479.73
  5. Step 5: Solve for x
    x = 233,352,173,479.73/557,796.20
  6. Step 6: Final answer
    x = 418,346.65

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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.