Home / 2,021,389.20-3,029,461.56-821,915.28

Finding the Fourth Proportional to 2,021,389.20, 3,029,461.56 and 821,915.28

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Solution

The fourth proportional to 2,021,389.20, 3,029,461.56 and 821,915.28 is: 1,231,806.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,021,389.20 : 3,029,461.56 = 821,915.28 : x
  2. Step 2: Convert to fraction form
    2,021,389.20/3,029,461.56 = 821,915.28/x
  3. Step 3: Cross multiply
    2,021,389.20x = 3,029,461.56 × 821,915.28
  4. Step 4: Simplify right side
    2,021,389.20x = 2,489,960,746,336.64
  5. Step 5: Solve for x
    x = 2,489,960,746,336.64/2,021,389.20
  6. Step 6: Final answer
    x = 1,231,806.69

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.