Home / 805,980.76-1,207,974.64-406,735.72

Finding the Fourth Proportional to 805,980.76, 1,207,974.64 and 406,735.72

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Solution

The fourth proportional to 805,980.76, 1,207,974.64 and 406,735.72 is: 609,600.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,980.76 : 1,207,974.64 = 406,735.72 : x
  2. Step 2: Convert to fraction form
    805,980.76/1,207,974.64 = 406,735.72/x
  3. Step 3: Cross multiply
    805,980.76x = 1,207,974.64 × 406,735.72
  4. Step 4: Simplify right side
    805,980.76x = 491,326,434,942.14
  5. Step 5: Solve for x
    x = 491,326,434,942.14/805,980.76
  6. Step 6: Final answer
    x = 609,600.70

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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.