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Finding the Fourth Proportional to 835,609.80, 1,253,414.70 and 782,465.70

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Solution

The fourth proportional to 835,609.80, 1,253,414.70 and 782,465.70 is: 1,173,698.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    835,609.80 : 1,253,414.70 = 782,465.70 : x
  2. Step 2: Convert to fraction form
    835,609.80/1,253,414.70 = 782,465.70/x
  3. Step 3: Cross multiply
    835,609.80x = 1,253,414.70 × 782,465.70
  4. Step 4: Simplify right side
    835,609.80x = 980,754,010,625.79
  5. Step 5: Solve for x
    x = 980,754,010,625.79/835,609.80
  6. Step 6: Final answer
    x = 1,173,698.55

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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.