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Finding the Fourth Proportional to 557,708.14, 769,636.65 and 303,058.72

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Solution

The fourth proportional to 557,708.14, 769,636.65 and 303,058.72 is: 418,220.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,708.14 : 769,636.65 = 303,058.72 : x
  2. Step 2: Convert to fraction form
    557,708.14/769,636.65 = 303,058.72/x
  3. Step 3: Cross multiply
    557,708.14x = 769,636.65 × 303,058.72
  4. Step 4: Simplify right side
    557,708.14x = 233,245,098,014.09
  5. Step 5: Solve for x
    x = 233,245,098,014.09/557,708.14
  6. Step 6: Final answer
    x = 418,220.72

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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.