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Finding the Fourth Proportional to 680,648.91, 939,278.32 and 374,722.23

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Solution

The fourth proportional to 680,648.91, 939,278.32 and 374,722.23 is: 517,107.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,648.91 : 939,278.32 = 374,722.23 : x
  2. Step 2: Convert to fraction form
    680,648.91/939,278.32 = 374,722.23/x
  3. Step 3: Cross multiply
    680,648.91x = 939,278.32 × 374,722.23
  4. Step 4: Simplify right side
    680,648.91x = 351,968,464,787.44
  5. Step 5: Solve for x
    x = 351,968,464,787.44/680,648.91
  6. Step 6: Final answer
    x = 517,107.22

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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.