Home / 853,920.72-1,279,109.52-497,854.80

Finding the Fourth Proportional to 853,920.72, 1,279,109.52 and 497,854.80

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Solution

The fourth proportional to 853,920.72, 1,279,109.52 and 497,854.80 is: 745,749.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,920.72 : 1,279,109.52 = 497,854.80 : x
  2. Step 2: Convert to fraction form
    853,920.72/1,279,109.52 = 497,854.80/x
  3. Step 3: Cross multiply
    853,920.72x = 1,279,109.52 × 497,854.80
  4. Step 4: Simplify right side
    853,920.72x = 636,810,814,257.70
  5. Step 5: Solve for x
    x = 636,810,814,257.70/853,920.72
  6. Step 6: Final answer
    x = 745,749.34

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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.