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Finding the Fourth Proportional to 494,477.10, 682,420.68 and 279,655.38

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Solution

The fourth proportional to 494,477.10, 682,420.68 and 279,655.38 is: 385,948.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,477.10 : 682,420.68 = 279,655.38 : x
  2. Step 2: Convert to fraction form
    494,477.10/682,420.68 = 279,655.38/x
  3. Step 3: Cross multiply
    494,477.10x = 682,420.68 × 279,655.38
  4. Step 4: Simplify right side
    494,477.10x = 190,842,614,585.26
  5. Step 5: Solve for x
    x = 190,842,614,585.26/494,477.10
  6. Step 6: Final answer
    x = 385,948.34

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1.5x scale

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.