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Finding the Fourth Proportional to 557,890.72, 769,884.60 and 303,241.12

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Solution

The fourth proportional to 557,890.72, 769,884.60 and 303,241.12 is: 418,470.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,890.72 : 769,884.60 = 303,241.12 : x
  2. Step 2: Convert to fraction form
    557,890.72/769,884.60 = 303,241.12/x
  3. Step 3: Cross multiply
    557,890.72x = 769,884.60 × 303,241.12
  4. Step 4: Simplify right side
    557,890.72x = 233,460,668,374.75
  5. Step 5: Solve for x
    x = 233,460,668,374.75/557,890.72
  6. Step 6: Final answer
    x = 418,470.25

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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.