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Finding the Fourth Proportional to 663,340.80, 995,140.80 and 263,913.60

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Solution

The fourth proportional to 663,340.80, 995,140.80 and 263,913.60 is: 395,921.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,340.80 : 995,140.80 = 263,913.60 : x
  2. Step 2: Convert to fraction form
    663,340.80/995,140.80 = 263,913.60/x
  3. Step 3: Cross multiply
    663,340.80x = 995,140.80 × 263,913.60
  4. Step 4: Simplify right side
    663,340.80x = 262,631,191,034.88
  5. Step 5: Solve for x
    x = 262,631,191,034.88/663,340.80
  6. Step 6: Final answer
    x = 395,921.96

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1.5x scale

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.