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Finding the Fourth Proportional to 716,850.50, 989,253.95 and 394,558.29

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Solution

The fourth proportional to 716,850.50, 989,253.95 and 394,558.29 is: 544,490.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,850.50 : 989,253.95 = 394,558.29 : x
  2. Step 2: Convert to fraction form
    716,850.50/989,253.95 = 394,558.29/x
  3. Step 3: Cross multiply
    716,850.50x = 989,253.95 × 394,558.29
  4. Step 4: Simplify right side
    716,850.50x = 390,318,344,914.95
  5. Step 5: Solve for x
    x = 390,318,344,914.95/716,850.50
  6. Step 6: Final answer
    x = 544,490.58

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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.