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Finding the Fourth Proportional to 663,065.60, 995,116.80 and 308,123.60

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Solution

The fourth proportional to 663,065.60, 995,116.80 and 308,123.60 is: 462,426.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,065.60 : 995,116.80 = 308,123.60 : x
  2. Step 2: Convert to fraction form
    663,065.60/995,116.80 = 308,123.60/x
  3. Step 3: Cross multiply
    663,065.60x = 995,116.80 × 308,123.60
  4. Step 4: Simplify right side
    663,065.60x = 306,618,970,836.48
  5. Step 5: Solve for x
    x = 306,618,970,836.48/663,065.60
  6. Step 6: Final answer
    x = 462,426.30

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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.