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Finding the Fourth Proportional to 611,780.40, 844,233.50 and 339,865.40

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Solution

The fourth proportional to 611,780.40, 844,233.50 and 339,865.40 is: 469,001.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,780.40 : 844,233.50 = 339,865.40 : x
  2. Step 2: Convert to fraction form
    611,780.40/844,233.50 = 339,865.40/x
  3. Step 3: Cross multiply
    611,780.40x = 844,233.50 × 339,865.40
  4. Step 4: Simplify right side
    611,780.40x = 286,925,756,170.90
  5. Step 5: Solve for x
    x = 286,925,756,170.90/611,780.40
  6. Step 6: Final answer
    x = 469,001.22

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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.