Home / 686,836.42-947,891.01-381,011.41

Finding the Fourth Proportional to 686,836.42, 947,891.01 and 381,011.41

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Solution

The fourth proportional to 686,836.42, 947,891.01 and 381,011.41 is: 525,827.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,836.42 : 947,891.01 = 381,011.41 : x
  2. Step 2: Convert to fraction form
    686,836.42/947,891.01 = 381,011.41/x
  3. Step 3: Cross multiply
    686,836.42x = 947,891.01 × 381,011.41
  4. Step 4: Simplify right side
    686,836.42x = 361,157,286,717.98
  5. Step 5: Solve for x
    x = 361,157,286,717.98/686,836.42
  6. Step 6: Final answer
    x = 525,827.22

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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.