Home / 821,214.90-1,132,625.97-498,915.90

Finding the Fourth Proportional to 821,214.90, 1,132,625.97 and 498,915.90

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Solution

The fourth proportional to 821,214.90, 1,132,625.97 and 498,915.90 is: 688,108.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,214.90 : 1,132,625.97 = 498,915.90 : x
  2. Step 2: Convert to fraction form
    821,214.90/1,132,625.97 = 498,915.90/x
  3. Step 3: Cross multiply
    821,214.90x = 1,132,625.97 × 498,915.90
  4. Step 4: Simplify right side
    821,214.90x = 565,085,105,185.92
  5. Step 5: Solve for x
    x = 565,085,105,185.92/821,214.90
  6. Step 6: Final answer
    x = 688,108.69

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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.