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Finding the Fourth Proportional to 491,468.75, 677,646.55 and 336,495.20

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Solution

The fourth proportional to 491,468.75, 677,646.55 and 336,495.20 is: 463,966.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,468.75 : 677,646.55 = 336,495.20 : x
  2. Step 2: Convert to fraction form
    491,468.75/677,646.55 = 336,495.20/x
  3. Step 3: Cross multiply
    491,468.75x = 677,646.55 × 336,495.20
  4. Step 4: Simplify right side
    491,468.75x = 228,024,812,224.44
  5. Step 5: Solve for x
    x = 228,024,812,224.44/491,468.75
  6. Step 6: Final answer
    x = 463,966.04

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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.