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Finding the Fourth Proportional to 487,839.72, 731,759.56 and 321,588.84

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Solution

The fourth proportional to 487,839.72, 731,759.56 and 321,588.84 is: 482,383.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,839.72 : 731,759.56 = 321,588.84 : x
  2. Step 2: Convert to fraction form
    487,839.72/731,759.56 = 321,588.84/x
  3. Step 3: Cross multiply
    487,839.72x = 731,759.56 × 321,588.84
  4. Step 4: Simplify right side
    487,839.72x = 235,325,708,059.31
  5. Step 5: Solve for x
    x = 235,325,708,059.31/487,839.72
  6. Step 6: Final answer
    x = 482,383.25

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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.