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Finding the Fourth Proportional to 557,576.36, 769,285.86 and 315,820.52

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Solution

The fourth proportional to 557,576.36, 769,285.86 and 315,820.52 is: 435,736.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,576.36 : 769,285.86 = 315,820.52 : x
  2. Step 2: Convert to fraction form
    557,576.36/769,285.86 = 315,820.52/x
  3. Step 3: Cross multiply
    557,576.36x = 769,285.86 × 315,820.52
  4. Step 4: Simplify right side
    557,576.36x = 242,956,260,333.85
  5. Step 5: Solve for x
    x = 242,956,260,333.85/557,576.36
  6. Step 6: Final answer
    x = 435,736.30

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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.