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Finding the Fourth Proportional to 557,793.19, 769,760.58 and 303,144.40

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Solution

The fourth proportional to 557,793.19, 769,760.58 and 303,144.40 is: 418,342.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,793.19 : 769,760.58 = 303,144.40 : x
  2. Step 2: Convert to fraction form
    557,793.19/769,760.58 = 303,144.40/x
  3. Step 3: Cross multiply
    557,793.19x = 769,760.58 × 303,144.40
  4. Step 4: Simplify right side
    557,793.19x = 233,348,609,167.75
  5. Step 5: Solve for x
    x = 233,348,609,167.75/557,793.19
  6. Step 6: Final answer
    x = 418,342.52

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Double scale
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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.