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Finding the Fourth Proportional to 508,790.89, 702,132.83 and 279,363.04

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Solution

The fourth proportional to 508,790.89, 702,132.83 and 279,363.04 is: 385,521.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,790.89 : 702,132.83 = 279,363.04 : x
  2. Step 2: Convert to fraction form
    508,790.89/702,132.83 = 279,363.04/x
  3. Step 3: Cross multiply
    508,790.89x = 702,132.83 × 279,363.04
  4. Step 4: Simplify right side
    508,790.89x = 196,149,961,872.60
  5. Step 5: Solve for x
    x = 196,149,961,872.60/508,790.89
  6. Step 6: Final answer
    x = 385,521.76

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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.