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Finding the Fourth Proportional to 488,893.12, 734,462.48 and 345,129.48

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Solution

The fourth proportional to 488,893.12, 734,462.48 and 345,129.48 is: 518,486.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,893.12 : 734,462.48 = 345,129.48 : x
  2. Step 2: Convert to fraction form
    488,893.12/734,462.48 = 345,129.48/x
  3. Step 3: Cross multiply
    488,893.12x = 734,462.48 × 345,129.48
  4. Step 4: Simplify right side
    488,893.12x = 253,484,653,801.91
  5. Step 5: Solve for x
    x = 253,484,653,801.91/488,893.12
  6. Step 6: Final answer
    x = 518,486.85

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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.