Home / 913,147.57-1,260,180.79-505,242.78

Finding the Fourth Proportional to 913,147.57, 1,260,180.79 and 505,242.78

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Solution

The fourth proportional to 913,147.57, 1,260,180.79 and 505,242.78 is: 697,255.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    913,147.57 : 1,260,180.79 = 505,242.78 : x
  2. Step 2: Convert to fraction form
    913,147.57/1,260,180.79 = 505,242.78/x
  3. Step 3: Cross multiply
    913,147.57x = 1,260,180.79 × 505,242.78
  4. Step 4: Simplify right side
    913,147.57x = 636,697,239,653.41
  5. Step 5: Solve for x
    x = 636,697,239,653.41/913,147.57
  6. Step 6: Final answer
    x = 697,255.58

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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.