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Finding the Fourth Proportional to 557,367.03, 769,119.54 and 309,015.62

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Solution

The fourth proportional to 557,367.03, 769,119.54 and 309,015.62 is: 426,415.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,367.03 : 769,119.54 = 309,015.62 : x
  2. Step 2: Convert to fraction form
    557,367.03/769,119.54 = 309,015.62/x
  3. Step 3: Cross multiply
    557,367.03x = 769,119.54 × 309,015.62
  4. Step 4: Simplify right side
    557,367.03x = 237,669,951,507.22
  5. Step 5: Solve for x
    x = 237,669,951,507.22/557,367.03
  6. Step 6: Final answer
    x = 426,415.52

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.