Home / 781,539.22-1,078,595.76-491,197.96

Finding the Fourth Proportional to 781,539.22, 1,078,595.76 and 491,197.96

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Solution

The fourth proportional to 781,539.22, 1,078,595.76 and 491,197.96 is: 677,898.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,539.22 : 1,078,595.76 = 491,197.96 : x
  2. Step 2: Convert to fraction form
    781,539.22/1,078,595.76 = 491,197.96/x
  3. Step 3: Cross multiply
    781,539.22x = 1,078,595.76 × 491,197.96
  4. Step 4: Simplify right side
    781,539.22x = 529,804,036,976.65
  5. Step 5: Solve for x
    x = 529,804,036,976.65/781,539.22
  6. Step 6: Final answer
    x = 677,898.21

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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.