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Finding the Fourth Proportional to 425,856, 637,455.32 and 313,662.88

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Solution

The fourth proportional to 425,856, 637,455.32 and 313,662.88 is: 469,515.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,856 : 637,455.32 = 313,662.88 : x
  2. Step 2: Convert to fraction form
    425,856/637,455.32 = 313,662.88/x
  3. Step 3: Cross multiply
    425,856x = 637,455.32 × 313,662.88
  4. Step 4: Simplify right side
    425,856x = 199,946,071,542.52
  5. Step 5: Solve for x
    x = 199,946,071,542.52/425,856
  6. Step 6: Final answer
    x = 469,515.68

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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.