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Finding the Fourth Proportional to 557,681.25, 769,605 and 303,032.43

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Solution

The fourth proportional to 557,681.25, 769,605 and 303,032.43 is: 418,187.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,681.25 : 769,605 = 303,032.43 : x
  2. Step 2: Convert to fraction form
    557,681.25/769,605 = 303,032.43/x
  3. Step 3: Cross multiply
    557,681.25x = 769,605 × 303,032.43
  4. Step 4: Simplify right side
    557,681.25x = 233,215,273,290.15
  5. Step 5: Solve for x
    x = 233,215,273,290.15/557,681.25
  6. Step 6: Final answer
    x = 418,187.40

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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.