Home / 558,278.40-770,401.95-303,629.79

Finding the Fourth Proportional to 558,278.40, 770,401.95 and 303,629.79

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Solution

The fourth proportional to 558,278.40, 770,401.95 and 303,629.79 is: 418,997.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,278.40 : 770,401.95 = 303,629.79 : x
  2. Step 2: Convert to fraction form
    558,278.40/770,401.95 = 303,629.79/x
  3. Step 3: Cross multiply
    558,278.40x = 770,401.95 × 303,629.79
  4. Step 4: Simplify right side
    558,278.40x = 233,916,982,294.09
  5. Step 5: Solve for x
    x = 233,916,982,294.09/558,278.40
  6. Step 6: Final answer
    x = 418,997.01

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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.