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Finding the Fourth Proportional to 557,708.64, 769,637.34 and 303,059.22

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Solution

The fourth proportional to 557,708.64, 769,637.34 and 303,059.22 is: 418,221.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,708.64 : 769,637.34 = 303,059.22 : x
  2. Step 2: Convert to fraction form
    557,708.64/769,637.34 = 303,059.22/x
  3. Step 3: Cross multiply
    557,708.64x = 769,637.34 × 303,059.22
  4. Step 4: Simplify right side
    557,708.64x = 233,245,691,943.28
  5. Step 5: Solve for x
    x = 233,245,691,943.28/557,708.64
  6. Step 6: Final answer
    x = 418,221.41

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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.