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Finding the Fourth Proportional to 557,615.64, 769,512.78 and 302,968.92

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Solution

The fourth proportional to 557,615.64, 769,512.78 and 302,968.92 is: 418,098.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,615.64 : 769,512.78 = 302,968.92 : x
  2. Step 2: Convert to fraction form
    557,615.64/769,512.78 = 302,968.92/x
  3. Step 3: Cross multiply
    557,615.64x = 769,512.78 × 302,968.92
  4. Step 4: Simplify right side
    557,615.64x = 233,138,455,882.80
  5. Step 5: Solve for x
    x = 233,138,455,882.80/557,615.64
  6. Step 6: Final answer
    x = 418,098.85

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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.