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Finding the Fourth Proportional to 559,537.48, 772,137.59 and 317,819.31

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Solution

The fourth proportional to 559,537.48, 772,137.59 and 317,819.31 is: 438,576.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,537.48 : 772,137.59 = 317,819.31 : x
  2. Step 2: Convert to fraction form
    559,537.48/772,137.59 = 317,819.31/x
  3. Step 3: Cross multiply
    559,537.48x = 772,137.59 × 317,819.31
  4. Step 4: Simplify right side
    559,537.48x = 245,400,236,078.86
  5. Step 5: Solve for x
    x = 245,400,236,078.86/559,537.48
  6. Step 6: Final answer
    x = 438,576.94

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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.