Home / 664,120.92-916,459.71-392,276.82

Finding the Fourth Proportional to 664,120.92, 916,459.71 and 392,276.82

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Solution

The fourth proportional to 664,120.92, 916,459.71 and 392,276.82 is: 541,325.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,120.92 : 916,459.71 = 392,276.82 : x
  2. Step 2: Convert to fraction form
    664,120.92/916,459.71 = 392,276.82/x
  3. Step 3: Cross multiply
    664,120.92x = 916,459.71 × 392,276.82
  4. Step 4: Simplify right side
    664,120.92x = 359,505,900,696.92
  5. Step 5: Solve for x
    x = 359,505,900,696.92/664,120.92
  6. Step 6: Final answer
    x = 541,325.97

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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.