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Finding the Fourth Proportional to 675,431.32, 932,003.94 and 385,080.34

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Solution

The fourth proportional to 675,431.32, 932,003.94 and 385,080.34 is: 531,358.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    675,431.32 : 932,003.94 = 385,080.34 : x
  2. Step 2: Convert to fraction form
    675,431.32/932,003.94 = 385,080.34/x
  3. Step 3: Cross multiply
    675,431.32x = 932,003.94 × 385,080.34
  4. Step 4: Simplify right side
    675,431.32x = 358,896,394,096.54
  5. Step 5: Solve for x
    x = 358,896,394,096.54/675,431.32
  6. Step 6: Final answer
    x = 531,358.83

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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.