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Finding the Fourth Proportional to 611,623.63, 844,011.93 and 339,709.06

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Solution

The fourth proportional to 611,623.63, 844,011.93 and 339,709.06 is: 468,782.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,623.63 : 844,011.93 = 339,709.06 : x
  2. Step 2: Convert to fraction form
    611,623.63/844,011.93 = 339,709.06/x
  3. Step 3: Cross multiply
    611,623.63x = 844,011.93 × 339,709.06
  4. Step 4: Simplify right side
    611,623.63x = 286,718,499,369.09
  5. Step 5: Solve for x
    x = 286,718,499,369.09/611,623.63
  6. Step 6: Final answer
    x = 468,782.57

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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.