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Finding the Fourth Proportional to 425,843.97, 637,437.35 and 313,650.87

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Solution

The fourth proportional to 425,843.97, 637,437.35 and 313,650.87 is: 469,497.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,843.97 : 637,437.35 = 313,650.87 : x
  2. Step 2: Convert to fraction form
    425,843.97/637,437.35 = 313,650.87/x
  3. Step 3: Cross multiply
    425,843.97x = 637,437.35 × 313,650.87
  4. Step 4: Simplify right side
    425,843.97x = 199,932,774,642.55
  5. Step 5: Solve for x
    x = 199,932,774,642.55/425,843.97
  6. Step 6: Final answer
    x = 469,497.73

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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.