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Finding the Fourth Proportional to 428,551.71, 591,281.66 and 337,625.49

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Solution

The fourth proportional to 428,551.71, 591,281.66 and 337,625.49 is: 465,828.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,551.71 : 591,281.66 = 337,625.49 : x
  2. Step 2: Convert to fraction form
    428,551.71/591,281.66 = 337,625.49/x
  3. Step 3: Cross multiply
    428,551.71x = 591,281.66 × 337,625.49
  4. Step 4: Simplify right side
    428,551.71x = 199,631,758,497.39
  5. Step 5: Solve for x
    x = 199,631,758,497.39/428,551.71
  6. Step 6: Final answer
    x = 465,828.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.