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Finding the Fourth Proportional to 611,549.18, 843,965.89 and 339,618.29

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Solution

The fourth proportional to 611,549.18, 843,965.89 and 339,618.29 is: 468,688.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,549.18 : 843,965.89 = 339,618.29 : x
  2. Step 2: Convert to fraction form
    611,549.18/843,965.89 = 339,618.29/x
  3. Step 3: Cross multiply
    611,549.18x = 843,965.89 × 339,618.29
  4. Step 4: Simplify right side
    611,549.18x = 286,626,247,311.25
  5. Step 5: Solve for x
    x = 286,626,247,311.25/611,549.18
  6. Step 6: Final answer
    x = 468,688.80

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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.