Home / 490,388.03-676,792.18-286,489.92

Finding the Fourth Proportional to 490,388.03, 676,792.18 and 286,489.92

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Solution

The fourth proportional to 490,388.03, 676,792.18 and 286,489.92 is: 395,389.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,388.03 : 676,792.18 = 286,489.92 : x
  2. Step 2: Convert to fraction form
    490,388.03/676,792.18 = 286,489.92/x
  3. Step 3: Cross multiply
    490,388.03x = 676,792.18 × 286,489.92
  4. Step 4: Simplify right side
    490,388.03x = 193,894,137,504.83
  5. Step 5: Solve for x
    x = 193,894,137,504.83/490,388.03
  6. Step 6: Final answer
    x = 395,389.21

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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.