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Finding the Fourth Proportional to 663,324.40, 994,986.60 and 309,030.40

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Solution

The fourth proportional to 663,324.40, 994,986.60 and 309,030.40 is: 463,545.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,324.40 : 994,986.60 = 309,030.40 : x
  2. Step 2: Convert to fraction form
    663,324.40/994,986.60 = 309,030.40/x
  3. Step 3: Cross multiply
    663,324.40x = 994,986.60 × 309,030.40
  4. Step 4: Simplify right side
    663,324.40x = 307,481,106,992.64
  5. Step 5: Solve for x
    x = 307,481,106,992.64/663,324.40
  6. Step 6: Final answer
    x = 463,545.60

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Double scale
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Similar ratio
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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.