Home / 641,890.45-963,015.66-257,908.94

Finding the Fourth Proportional to 641,890.45, 963,015.66 and 257,908.94

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Solution

The fourth proportional to 641,890.45, 963,015.66 and 257,908.94 is: 386,935.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,890.45 : 963,015.66 = 257,908.94 : x
  2. Step 2: Convert to fraction form
    641,890.45/963,015.66 = 257,908.94/x
  3. Step 3: Cross multiply
    641,890.45x = 963,015.66 × 257,908.94
  4. Step 4: Simplify right side
    641,890.45x = 248,370,343,258.92
  5. Step 5: Solve for x
    x = 248,370,343,258.92/641,890.45
  6. Step 6: Final answer
    x = 386,935.72

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1.5x scale

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.