Home / 709,508.72-979,144.87-403,577.23

Finding the Fourth Proportional to 709,508.72, 979,144.87 and 403,577.23

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Solution

The fourth proportional to 709,508.72, 979,144.87 and 403,577.23 is: 556,949.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,508.72 : 979,144.87 = 403,577.23 : x
  2. Step 2: Convert to fraction form
    709,508.72/979,144.87 = 403,577.23/x
  3. Step 3: Cross multiply
    709,508.72x = 979,144.87 × 403,577.23
  4. Step 4: Simplify right side
    709,508.72x = 395,160,576,469.14
  5. Step 5: Solve for x
    x = 395,160,576,469.14/709,508.72
  6. Step 6: Final answer
    x = 556,949.57

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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.