Home / 661,445.29-989,179.03-509,623.75

Finding the Fourth Proportional to 661,445.29, 989,179.03 and 509,623.75

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Solution

The fourth proportional to 661,445.29, 989,179.03 and 509,623.75 is: 762,132.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,445.29 : 989,179.03 = 509,623.75 : x
  2. Step 2: Convert to fraction form
    661,445.29/989,179.03 = 509,623.75/x
  3. Step 3: Cross multiply
    661,445.29x = 989,179.03 × 509,623.75
  4. Step 4: Simplify right side
    661,445.29x = 504,109,119,195.95
  5. Step 5: Solve for x
    x = 504,109,119,195.95/661,445.29
  6. Step 6: Final answer
    x = 762,132.76

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.