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Finding the Fourth Proportional to 713,464.88, 984,576.33 and 391,169.66

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Solution

The fourth proportional to 713,464.88, 984,576.33 and 391,169.66 is: 539,811.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,464.88 : 984,576.33 = 391,169.66 : x
  2. Step 2: Convert to fraction form
    713,464.88/984,576.33 = 391,169.66/x
  3. Step 3: Cross multiply
    713,464.88x = 984,576.33 × 391,169.66
  4. Step 4: Simplify right side
    713,464.88x = 385,136,388,250.15
  5. Step 5: Solve for x
    x = 385,136,388,250.15/713,464.88
  6. Step 6: Final answer
    x = 539,811.28

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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.