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Finding the Fourth Proportional to 713,466.88, 984,579.09 and 391,171.66

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Solution

The fourth proportional to 713,466.88, 984,579.09 and 391,171.66 is: 539,814.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,466.88 : 984,579.09 = 391,171.66 : x
  2. Step 2: Convert to fraction form
    713,466.88/984,579.09 = 391,171.66/x
  3. Step 3: Cross multiply
    713,466.88x = 984,579.09 × 391,171.66
  4. Step 4: Simplify right side
    713,466.88x = 385,139,437,036.59
  5. Step 5: Solve for x
    x = 385,139,437,036.59/713,466.88
  6. Step 6: Final answer
    x = 539,814.04

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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.