Home / 778,374.14-1,073,604.31-505,939.55

Finding the Fourth Proportional to 778,374.14, 1,073,604.31 and 505,939.55

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Solution

The fourth proportional to 778,374.14, 1,073,604.31 and 505,939.55 is: 697,837.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,374.14 : 1,073,604.31 = 505,939.55 : x
  2. Step 2: Convert to fraction form
    778,374.14/1,073,604.31 = 505,939.55/x
  3. Step 3: Cross multiply
    778,374.14x = 1,073,604.31 × 505,939.55
  4. Step 4: Simplify right side
    778,374.14x = 543,178,874,846.59
  5. Step 5: Solve for x
    x = 543,178,874,846.59/778,374.14
  6. Step 6: Final answer
    x = 697,837.78

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1.5x scale

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.