Home / 543,399.70-815,974.35-410,430.10

Finding the Fourth Proportional to 543,399.70, 815,974.35 and 410,430.10

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Solution

The fourth proportional to 543,399.70, 815,974.35 and 410,430.10 is: 616,305.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,399.70 : 815,974.35 = 410,430.10 : x
  2. Step 2: Convert to fraction form
    543,399.70/815,974.35 = 410,430.10/x
  3. Step 3: Cross multiply
    543,399.70x = 815,974.35 × 410,430.10
  4. Step 4: Simplify right side
    543,399.70x = 334,900,434,067.94
  5. Step 5: Solve for x
    x = 334,900,434,067.94/543,399.70
  6. Step 6: Final answer
    x = 616,305.89

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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.