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Finding the Fourth Proportional to 611,491.97, 843,830.52 and 339,577.10

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Solution

The fourth proportional to 611,491.97, 843,830.52 and 339,577.10 is: 468,600.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,491.97 : 843,830.52 = 339,577.10 : x
  2. Step 2: Convert to fraction form
    611,491.97/843,830.52 = 339,577.10/x
  3. Step 3: Cross multiply
    611,491.97x = 843,830.52 × 339,577.10
  4. Step 4: Simplify right side
    611,491.97x = 286,545,520,873.09
  5. Step 5: Solve for x
    x = 286,545,520,873.09/611,491.97
  6. Step 6: Final answer
    x = 468,600.63

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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.