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Finding the Fourth Proportional to 508,789.89, 702,131.45 and 279,362.04

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Solution

The fourth proportional to 508,789.89, 702,131.45 and 279,362.04 is: 385,520.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,789.89 : 702,131.45 = 279,362.04 : x
  2. Step 2: Convert to fraction form
    508,789.89/702,131.45 = 279,362.04/x
  3. Step 3: Cross multiply
    508,789.89x = 702,131.45 × 279,362.04
  4. Step 4: Simplify right side
    508,789.89x = 196,148,874,220.16
  5. Step 5: Solve for x
    x = 196,148,874,220.16/508,789.89
  6. Step 6: Final answer
    x = 385,520.38

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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.