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Finding the Fourth Proportional to 659,065.70, 988,242.86 and 299,040.09

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Solution

The fourth proportional to 659,065.70, 988,242.86 and 299,040.09 is: 448,398.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,065.70 : 988,242.86 = 299,040.09 : x
  2. Step 2: Convert to fraction form
    659,065.70/988,242.86 = 299,040.09/x
  3. Step 3: Cross multiply
    659,065.70x = 988,242.86 × 299,040.09
  4. Step 4: Simplify right side
    659,065.70x = 295,524,231,008.80
  5. Step 5: Solve for x
    x = 295,524,231,008.80/659,065.70
  6. Step 6: Final answer
    x = 448,398.74

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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.