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Finding the Fourth Proportional to 624,010.30, 936,015.45 and 309,082.30

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Solution

The fourth proportional to 624,010.30, 936,015.45 and 309,082.30 is: 463,623.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,010.30 : 936,015.45 = 309,082.30 : x
  2. Step 2: Convert to fraction form
    624,010.30/936,015.45 = 309,082.30/x
  3. Step 3: Cross multiply
    624,010.30x = 936,015.45 × 309,082.30
  4. Step 4: Simplify right side
    624,010.30x = 289,305,808,121.54
  5. Step 5: Solve for x
    x = 289,305,808,121.54/624,010.30
  6. Step 6: Final answer
    x = 463,623.45

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Half scale
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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.