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Finding the Fourth Proportional to 659,212.80, 988,851.60 and 344,284.80

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Solution

The fourth proportional to 659,212.80, 988,851.60 and 344,284.80 is: 516,444.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,212.80 : 988,851.60 = 344,284.80 : x
  2. Step 2: Convert to fraction form
    659,212.80/988,851.60 = 344,284.80/x
  3. Step 3: Cross multiply
    659,212.80x = 988,851.60 × 344,284.80
  4. Step 4: Simplify right side
    659,212.80x = 340,446,575,335.68
  5. Step 5: Solve for x
    x = 340,446,575,335.68/659,212.80
  6. Step 6: Final answer
    x = 516,444.12

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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.