Home / 654,399.20-902,767.78-382,478.56

Finding the Fourth Proportional to 654,399.20, 902,767.78 and 382,478.56

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Solution

The fourth proportional to 654,399.20, 902,767.78 and 382,478.56 is: 527,643.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,399.20 : 902,767.78 = 382,478.56 : x
  2. Step 2: Convert to fraction form
    654,399.20/902,767.78 = 382,478.56/x
  3. Step 3: Cross multiply
    654,399.20x = 902,767.78 × 382,478.56
  4. Step 4: Simplify right side
    654,399.20x = 345,289,318,729.98
  5. Step 5: Solve for x
    x = 345,289,318,729.98/654,399.20
  6. Step 6: Final answer
    x = 527,643.24

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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.