Home / 1,679,664.40-2,519,496.60-921,212.80

Finding the Fourth Proportional to 1,679,664.40, 2,519,496.60 and 921,212.80

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Solution

The fourth proportional to 1,679,664.40, 2,519,496.60 and 921,212.80 is: 1,381,819.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,679,664.40 : 2,519,496.60 = 921,212.80 : x
  2. Step 2: Convert to fraction form
    1,679,664.40/2,519,496.60 = 921,212.80/x
  3. Step 3: Cross multiply
    1,679,664.40x = 2,519,496.60 × 921,212.80
  4. Step 4: Simplify right side
    1,679,664.40x = 2,320,992,517,476.48
  5. Step 5: Solve for x
    x = 2,320,992,517,476.48/1,679,664.40
  6. Step 6: Final answer
    x = 1,381,819.20

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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.