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Finding the Fourth Proportional to 557,705.98, 769,645.63 and 303,073.57

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Solution

The fourth proportional to 557,705.98, 769,645.63 and 303,073.57 is: 418,247.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,705.98 : 769,645.63 = 303,073.57 : x
  2. Step 2: Convert to fraction form
    557,705.98/769,645.63 = 303,073.57/x
  3. Step 3: Cross multiply
    557,705.98x = 769,645.63 × 303,073.57
  4. Step 4: Simplify right side
    557,705.98x = 233,259,247,203.63
  5. Step 5: Solve for x
    x = 233,259,247,203.63/557,705.98
  6. Step 6: Final answer
    x = 418,247.71

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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.