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Finding the Fourth Proportional to 558,287.81, 770,435.03 and 303,643.25

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Solution

The fourth proportional to 558,287.81, 770,435.03 and 303,643.25 is: 419,026.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,287.81 : 770,435.03 = 303,643.25 : x
  2. Step 2: Convert to fraction form
    558,287.81/770,435.03 = 303,643.25/x
  3. Step 3: Cross multiply
    558,287.81x = 770,435.03 × 303,643.25
  4. Step 4: Simplify right side
    558,287.81x = 233,937,393,329.98
  5. Step 5: Solve for x
    x = 233,937,393,329.98/558,287.81
  6. Step 6: Final answer
    x = 419,026.52

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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.