Home / 913,390.21-1,260,480.81-505,520.11

Finding the Fourth Proportional to 913,390.21, 1,260,480.81 and 505,520.11

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Solution

The fourth proportional to 913,390.21, 1,260,480.81 and 505,520.11 is: 697,619.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    913,390.21 : 1,260,480.81 = 505,520.11 : x
  2. Step 2: Convert to fraction form
    913,390.21/1,260,480.81 = 505,520.11/x
  3. Step 3: Cross multiply
    913,390.21x = 1,260,480.81 × 505,520.11
  4. Step 4: Simplify right side
    913,390.21x = 637,198,397,724.09
  5. Step 5: Solve for x
    x = 637,198,397,724.09/913,390.21
  6. Step 6: Final answer
    x = 697,619.04

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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.