Home / 543,399.20-815,973.60-410,429.60

Finding the Fourth Proportional to 543,399.20, 815,973.60 and 410,429.60

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Solution

The fourth proportional to 543,399.20, 815,973.60 and 410,429.60 is: 616,305.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,399.20 : 815,973.60 = 410,429.60 : x
  2. Step 2: Convert to fraction form
    543,399.20/815,973.60 = 410,429.60/x
  3. Step 3: Cross multiply
    543,399.20x = 815,973.60 × 410,429.60
  4. Step 4: Simplify right side
    543,399.20x = 334,899,718,258.56
  5. Step 5: Solve for x
    x = 334,899,718,258.56/543,399.20
  6. Step 6: Final answer
    x = 616,305.14

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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.