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Finding the Fourth Proportional to 659,497.50, 988,581.60 and 259,983.60

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Solution

The fourth proportional to 659,497.50, 988,581.60 and 259,983.60 is: 389,713.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,497.50 : 988,581.60 = 259,983.60 : x
  2. Step 2: Convert to fraction form
    659,497.50/988,581.60 = 259,983.60/x
  3. Step 3: Cross multiply
    659,497.50x = 988,581.60 × 259,983.60
  4. Step 4: Simplify right side
    659,497.50x = 257,015,003,261.76
  5. Step 5: Solve for x
    x = 257,015,003,261.76/659,497.50
  6. Step 6: Final answer
    x = 389,713.39

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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.