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Finding the Fourth Proportional to 557,969.40, 769,988.70 and 303,327

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Solution

The fourth proportional to 557,969.40, 769,988.70 and 303,327 is: 418,586.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,969.40 : 769,988.70 = 303,327 : x
  2. Step 2: Convert to fraction form
    557,969.40/769,988.70 = 303,327/x
  3. Step 3: Cross multiply
    557,969.40x = 769,988.70 × 303,327
  4. Step 4: Simplify right side
    557,969.40x = 233,558,362,404.90
  5. Step 5: Solve for x
    x = 233,558,362,404.90/557,969.40
  6. Step 6: Final answer
    x = 418,586.33

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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.