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Finding the Fourth Proportional to 611,622.63, 844,010.55 and 339,708.06

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Solution

The fourth proportional to 611,622.63, 844,010.55 and 339,708.06 is: 468,781.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,622.63 : 844,010.55 = 339,708.06 : x
  2. Step 2: Convert to fraction form
    611,622.63/844,010.55 = 339,708.06/x
  3. Step 3: Cross multiply
    611,622.63x = 844,010.55 × 339,708.06
  4. Step 4: Simplify right side
    611,622.63x = 286,717,186,560.03
  5. Step 5: Solve for x
    x = 286,717,186,560.03/611,622.63
  6. Step 6: Final answer
    x = 468,781.19

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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.