Home / 640,787.90-961,327.85-341,110.58

Finding the Fourth Proportional to 640,787.90, 961,327.85 and 341,110.58

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Solution

The fourth proportional to 640,787.90, 961,327.85 and 341,110.58 is: 511,743.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,787.90 : 961,327.85 = 341,110.58 : x
  2. Step 2: Convert to fraction form
    640,787.90/961,327.85 = 341,110.58/x
  3. Step 3: Cross multiply
    640,787.90x = 961,327.85 × 341,110.58
  4. Step 4: Simplify right side
    640,787.90x = 327,919,093,971.46
  5. Step 5: Solve for x
    x = 327,919,093,971.46/640,787.90
  6. Step 6: Final answer
    x = 511,743.58

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.