Home / 687,578.22-948,812.94-381,640.01

Finding the Fourth Proportional to 687,578.22, 948,812.94 and 381,640.01

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Solution

The fourth proportional to 687,578.22, 948,812.94 and 381,640.01 is: 526,638.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,578.22 : 948,812.94 = 381,640.01 : x
  2. Step 2: Convert to fraction form
    687,578.22/948,812.94 = 381,640.01/x
  3. Step 3: Cross multiply
    687,578.22x = 948,812.94 × 381,640.01
  4. Step 4: Simplify right side
    687,578.22x = 362,104,975,165.67
  5. Step 5: Solve for x
    x = 362,104,975,165.67/687,578.22
  6. Step 6: Final answer
    x = 526,638.23

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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.