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Finding the Fourth Proportional to 400,956.69, 601,434.78 and 374,384.64

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Solution

The fourth proportional to 400,956.69, 601,434.78 and 374,384.64 is: 561,576.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,956.69 : 601,434.78 = 374,384.64 : x
  2. Step 2: Convert to fraction form
    400,956.69/601,434.78 = 374,384.64/x
  3. Step 3: Cross multiply
    400,956.69x = 601,434.78 × 374,384.64
  4. Step 4: Simplify right side
    400,956.69x = 225,167,943,593.78
  5. Step 5: Solve for x
    x = 225,167,943,593.78/400,956.69
  6. Step 6: Final answer
    x = 561,576.72

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.