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Finding the Fourth Proportional to 664,499.20, 916,690.08 and 482,929.60

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Solution

The fourth proportional to 664,499.20, 916,690.08 and 482,929.60 is: 666,211.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,499.20 : 916,690.08 = 482,929.60 : x
  2. Step 2: Convert to fraction form
    664,499.20/916,690.08 = 482,929.60/x
  3. Step 3: Cross multiply
    664,499.20x = 916,690.08 × 482,929.60
  4. Step 4: Simplify right side
    664,499.20x = 442,696,773,658.37
  5. Step 5: Solve for x
    x = 442,696,773,658.37/664,499.20
  6. Step 6: Final answer
    x = 666,211.15

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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.