Home / 856,913.64-1,285,550.28-257,918.64

Finding the Fourth Proportional to 856,913.64, 1,285,550.28 and 257,918.64

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Solution

The fourth proportional to 856,913.64, 1,285,550.28 and 257,918.64 is: 386,932.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,913.64 : 1,285,550.28 = 257,918.64 : x
  2. Step 2: Convert to fraction form
    856,913.64/1,285,550.28 = 257,918.64/x
  3. Step 3: Cross multiply
    856,913.64x = 1,285,550.28 × 257,918.64
  4. Step 4: Simplify right side
    856,913.64x = 331,567,379,869.22
  5. Step 5: Solve for x
    x = 331,567,379,869.22/856,913.64
  6. Step 6: Final answer
    x = 386,932.08

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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.