Home / 591,418.63-815,873.20-387,381.25

Finding the Fourth Proportional to 591,418.63, 815,873.20 and 387,381.25

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Solution

The fourth proportional to 591,418.63, 815,873.20 and 387,381.25 is: 534,399.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    591,418.63 : 815,873.20 = 387,381.25 : x
  2. Step 2: Convert to fraction form
    591,418.63/815,873.20 = 387,381.25/x
  3. Step 3: Cross multiply
    591,418.63x = 815,873.20 × 387,381.25
  4. Step 4: Simplify right side
    591,418.63x = 316,053,980,057.50
  5. Step 5: Solve for x
    x = 316,053,980,057.50/591,418.63
  6. Step 6: Final answer
    x = 534,399.77

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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.