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Finding the Fourth Proportional to 611,382.95, 843,734.83 and 339,450.88

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Solution

The fourth proportional to 611,382.95, 843,734.83 and 339,450.88 is: 468,456.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,382.95 : 843,734.83 = 339,450.88 : x
  2. Step 2: Convert to fraction form
    611,382.95/843,734.83 = 339,450.88/x
  3. Step 3: Cross multiply
    611,382.95x = 843,734.83 × 339,450.88
  4. Step 4: Simplify right side
    611,382.95x = 286,406,532,421.22
  5. Step 5: Solve for x
    x = 286,406,532,421.22/611,382.95
  6. Step 6: Final answer
    x = 468,456.85

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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.