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Finding the Fourth Proportional to 659,496, 988,579.32 and 259,982.16

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Solution

The fourth proportional to 659,496, 988,579.32 and 259,982.16 is: 389,711.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,496 : 988,579.32 = 259,982.16 : x
  2. Step 2: Convert to fraction form
    659,496/988,579.32 = 259,982.16/x
  3. Step 3: Cross multiply
    659,496x = 988,579.32 × 259,982.16
  4. Step 4: Simplify right side
    659,496x = 257,012,986,944.93
  5. Step 5: Solve for x
    x = 257,012,986,944.93/659,496
  6. Step 6: Final answer
    x = 389,711.21

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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.