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Finding the Fourth Proportional to 778,976.80, 1,093,716.80 and 778,976.80

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Solution

The fourth proportional to 778,976.80, 1,093,716.80 and 778,976.80 is: 1,093,716.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,976.80 : 1,093,716.80 = 778,976.80 : x
  2. Step 2: Convert to fraction form
    778,976.80/1,093,716.80 = 778,976.80/x
  3. Step 3: Cross multiply
    778,976.80x = 1,093,716.80 × 778,976.80
  4. Step 4: Simplify right side
    778,976.80x = 851,980,012,970.24
  5. Step 5: Solve for x
    x = 851,980,012,970.24/778,976.80
  6. Step 6: Final answer
    x = 1,093,716.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.