Home / 856,920.59-1,285,385.48-257,877.68

Finding the Fourth Proportional to 856,920.59, 1,285,385.48 and 257,877.68

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Solution

The fourth proportional to 856,920.59, 1,285,385.48 and 257,877.68 is: 386,817.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,920.59 : 1,285,385.48 = 257,877.68 : x
  2. Step 2: Convert to fraction form
    856,920.59/1,285,385.48 = 257,877.68/x
  3. Step 3: Cross multiply
    856,920.59x = 1,285,385.48 × 257,877.68
  4. Step 4: Simplify right side
    856,920.59x = 331,472,219,464.09
  5. Step 5: Solve for x
    x = 331,472,219,464.09/856,920.59
  6. Step 6: Final answer
    x = 386,817.90

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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.