Home / 686,836.70-947,892.87-381,011.62

Finding the Fourth Proportional to 686,836.70, 947,892.87 and 381,011.62

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Solution

The fourth proportional to 686,836.70, 947,892.87 and 381,011.62 is: 525,828.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,836.70 : 947,892.87 = 381,011.62 : x
  2. Step 2: Convert to fraction form
    686,836.70/947,892.87 = 381,011.62/x
  3. Step 3: Cross multiply
    686,836.70x = 947,892.87 × 381,011.62
  4. Step 4: Simplify right side
    686,836.70x = 361,158,200,728.43
  5. Step 5: Solve for x
    x = 361,158,200,728.43/686,836.70
  6. Step 6: Final answer
    x = 525,828.33

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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.