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Finding the Fourth Proportional to 800,345.60, 1,200,520.43 and 327,030.96

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Solution

The fourth proportional to 800,345.60, 1,200,520.43 and 327,030.96 is: 490,547.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    800,345.60 : 1,200,520.43 = 327,030.96 : x
  2. Step 2: Convert to fraction form
    800,345.60/1,200,520.43 = 327,030.96/x
  3. Step 3: Cross multiply
    800,345.60x = 1,200,520.43 × 327,030.96
  4. Step 4: Simplify right side
    800,345.60x = 392,607,347,087.36
  5. Step 5: Solve for x
    x = 392,607,347,087.36/800,345.60
  6. Step 6: Final answer
    x = 490,547.27

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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.