Home / 687,199.82-948,334.83-385,391.18

Finding the Fourth Proportional to 687,199.82, 948,334.83 and 385,391.18

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Solution

The fourth proportional to 687,199.82, 948,334.83 and 385,391.18 is: 531,839.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,199.82 : 948,334.83 = 385,391.18 : x
  2. Step 2: Convert to fraction form
    687,199.82/948,334.83 = 385,391.18/x
  3. Step 3: Cross multiply
    687,199.82x = 948,334.83 × 385,391.18
  4. Step 4: Simplify right side
    687,199.82x = 365,479,879,168.80
  5. Step 5: Solve for x
    x = 365,479,879,168.80/687,199.82
  6. Step 6: Final answer
    x = 531,839.31

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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.