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Finding the Fourth Proportional to 590,863.12, 815,387.88 and 322,589.20

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Solution

The fourth proportional to 590,863.12, 815,387.88 and 322,589.20 is: 445,171.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    590,863.12 : 815,387.88 = 322,589.20 : x
  2. Step 2: Convert to fraction form
    590,863.12/815,387.88 = 322,589.20/x
  3. Step 3: Cross multiply
    590,863.12x = 815,387.88 × 322,589.20
  4. Step 4: Simplify right side
    590,863.12x = 263,035,323,898.90
  5. Step 5: Solve for x
    x = 263,035,323,898.90/590,863.12
  6. Step 6: Final answer
    x = 445,171.33

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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.