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Finding the Fourth Proportional to 872,308.96, 1,203,609.62 and 509,662.75

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Solution

The fourth proportional to 872,308.96, 1,203,609.62 and 509,662.75 is: 703,231.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    872,308.96 : 1,203,609.62 = 509,662.75 : x
  2. Step 2: Convert to fraction form
    872,308.96/1,203,609.62 = 509,662.75/x
  3. Step 3: Cross multiply
    872,308.96x = 1,203,609.62 × 509,662.75
  4. Step 4: Simplify right side
    872,308.96x = 613,434,988,855.66
  5. Step 5: Solve for x
    x = 613,434,988,855.66/872,308.96
  6. Step 6: Final answer
    x = 703,231.33

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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.