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Finding the Fourth Proportional to 611,787.69, 844,401.78 and 339,948.86

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Solution

The fourth proportional to 611,787.69, 844,401.78 and 339,948.86 is: 469,204.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,787.69 : 844,401.78 = 339,948.86 : x
  2. Step 2: Convert to fraction form
    611,787.69/844,401.78 = 339,948.86/x
  3. Step 3: Cross multiply
    611,787.69x = 844,401.78 × 339,948.86
  4. Step 4: Simplify right side
    611,787.69x = 287,053,418,270.96
  5. Step 5: Solve for x
    x = 287,053,418,270.96/611,787.69
  6. Step 6: Final answer
    x = 469,204.31

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1.5x scale

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.