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Finding the Fourth Proportional to 805,293.65, 1,207,054.67 and 331,720.67

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Solution

The fourth proportional to 805,293.65, 1,207,054.67 and 331,720.67 is: 497,216.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,293.65 : 1,207,054.67 = 331,720.67 : x
  2. Step 2: Convert to fraction form
    805,293.65/1,207,054.67 = 331,720.67/x
  3. Step 3: Cross multiply
    805,293.65x = 1,207,054.67 × 331,720.67
  4. Step 4: Simplify right side
    805,293.65x = 400,404,976,165.15
  5. Step 5: Solve for x
    x = 400,404,976,165.15/805,293.65
  6. Step 6: Final answer
    x = 497,216.11

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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.