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Finding the Fourth Proportional to 558,272.56, 770,394 and 303,623.68

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Solution

The fourth proportional to 558,272.56, 770,394 and 303,623.68 is: 418,988.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,272.56 : 770,394 = 303,623.68 : x
  2. Step 2: Convert to fraction form
    558,272.56/770,394 = 303,623.68/x
  3. Step 3: Cross multiply
    558,272.56x = 770,394 × 303,623.68
  4. Step 4: Simplify right side
    558,272.56x = 233,909,861,329.92
  5. Step 5: Solve for x
    x = 233,909,861,329.92/558,272.56
  6. Step 6: Final answer
    x = 418,988.64

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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.