Home / 856,955.20-1,285,426.32-257,913.76

Finding the Fourth Proportional to 856,955.20, 1,285,426.32 and 257,913.76

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Solution

The fourth proportional to 856,955.20, 1,285,426.32 and 257,913.76 is: 386,868.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,955.20 : 1,285,426.32 = 257,913.76 : x
  2. Step 2: Convert to fraction form
    856,955.20/1,285,426.32 = 257,913.76/x
  3. Step 3: Cross multiply
    856,955.20x = 1,285,426.32 × 257,913.76
  4. Step 4: Simplify right side
    856,955.20x = 331,529,135,394.16
  5. Step 5: Solve for x
    x = 331,529,135,394.16/856,955.20
  6. Step 6: Final answer
    x = 386,868.69

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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.