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Finding the Fourth Proportional to 491,646.60, 737,722.62 and 425,511.72

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Solution

The fourth proportional to 491,646.60, 737,722.62 and 425,511.72 is: 638,486.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,646.60 : 737,722.62 = 425,511.72 : x
  2. Step 2: Convert to fraction form
    491,646.60/737,722.62 = 425,511.72/x
  3. Step 3: Cross multiply
    491,646.60x = 737,722.62 × 425,511.72
  4. Step 4: Simplify right side
    491,646.60x = 313,909,620,919.11
  5. Step 5: Solve for x
    x = 313,909,620,919.11/491,646.60
  6. Step 6: Final answer
    x = 638,486.30

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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.