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Finding the Fourth Proportional to 675,388.79, 932,087.11 and 385,007.28

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Solution

The fourth proportional to 675,388.79, 932,087.11 and 385,007.28 is: 531,338.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    675,388.79 : 932,087.11 = 385,007.28 : x
  2. Step 2: Convert to fraction form
    675,388.79/932,087.11 = 385,007.28/x
  3. Step 3: Cross multiply
    675,388.79x = 932,087.11 × 385,007.28
  4. Step 4: Simplify right side
    675,388.79x = 358,860,324,451.20
  5. Step 5: Solve for x
    x = 358,860,324,451.20/675,388.79
  6. Step 6: Final answer
    x = 531,338.88

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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.