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Finding the Fourth Proportional to 663,685.60, 996,046.80 and 308,743.60

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Solution

The fourth proportional to 663,685.60, 996,046.80 and 308,743.60 is: 463,356.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,685.60 : 996,046.80 = 308,743.60 : x
  2. Step 2: Convert to fraction form
    663,685.60/996,046.80 = 308,743.60/x
  3. Step 3: Cross multiply
    663,685.60x = 996,046.80 × 308,743.60
  4. Step 4: Simplify right side
    663,685.60x = 307,523,074,800.48
  5. Step 5: Solve for x
    x = 307,523,074,800.48/663,685.60
  6. Step 6: Final answer
    x = 463,356.56

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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.