Home / 680,766.66-939,043.51-419,164.06

Finding the Fourth Proportional to 680,766.66, 939,043.51 and 419,164.06

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Solution

The fourth proportional to 680,766.66, 939,043.51 and 419,164.06 is: 578,191.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,766.66 : 939,043.51 = 419,164.06 : x
  2. Step 2: Convert to fraction form
    680,766.66/939,043.51 = 419,164.06/x
  3. Step 3: Cross multiply
    680,766.66x = 939,043.51 × 419,164.06
  4. Step 4: Simplify right side
    680,766.66x = 393,613,290,168.25
  5. Step 5: Solve for x
    x = 393,613,290,168.25/680,766.66
  6. Step 6: Final answer
    x = 578,191.20

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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.