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Finding the Fourth Proportional to 557,965.89, 770,001.53 and 303,318.09

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Solution

The fourth proportional to 557,965.89, 770,001.53 and 303,318.09 is: 418,583.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,965.89 : 770,001.53 = 303,318.09 : x
  2. Step 2: Convert to fraction form
    557,965.89/770,001.53 = 303,318.09/x
  3. Step 3: Cross multiply
    557,965.89x = 770,001.53 × 303,318.09
  4. Step 4: Simplify right side
    557,965.89x = 233,555,391,860.09
  5. Step 5: Solve for x
    x = 233,555,391,860.09/557,965.89
  6. Step 6: Final answer
    x = 418,583.64

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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.