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Finding the Fourth Proportional to 513,579.60, 708,707.70 and 284,131.44

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Solution

The fourth proportional to 513,579.60, 708,707.70 and 284,131.44 is: 392,083.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,579.60 : 708,707.70 = 284,131.44 : x
  2. Step 2: Convert to fraction form
    513,579.60/708,707.70 = 284,131.44/x
  3. Step 3: Cross multiply
    513,579.60x = 708,707.70 × 284,131.44
  4. Step 4: Simplify right side
    513,579.60x = 201,366,139,340.09
  5. Step 5: Solve for x
    x = 201,366,139,340.09/513,579.60
  6. Step 6: Final answer
    x = 392,083.60

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