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Finding the Fourth Proportional to 558,322.30, 770,479 and 303,673.42

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Solution

The fourth proportional to 558,322.30, 770,479 and 303,673.42 is: 419,066.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,322.30 : 770,479 = 303,673.42 : x
  2. Step 2: Convert to fraction form
    558,322.30/770,479 = 303,673.42/x
  3. Step 3: Cross multiply
    558,322.30x = 770,479 × 303,673.42
  4. Step 4: Simplify right side
    558,322.30x = 233,973,992,968.18
  5. Step 5: Solve for x
    x = 233,973,992,968.18/558,322.30
  6. Step 6: Final answer
    x = 419,066.18

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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.