Home / 1,072,213.80-1,606,938.30-821,653.80

Finding the Fourth Proportional to 1,072,213.80, 1,606,938.30 and 821,653.80

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Solution

The fourth proportional to 1,072,213.80, 1,606,938.30 and 821,653.80 is: 1,231,421.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,072,213.80 : 1,606,938.30 = 821,653.80 : x
  2. Step 2: Convert to fraction form
    1,072,213.80/1,606,938.30 = 821,653.80/x
  3. Step 3: Cross multiply
    1,072,213.80x = 1,606,938.30 × 821,653.80
  4. Step 4: Simplify right side
    1,072,213.80x = 1,320,346,960,560.54
  5. Step 5: Solve for x
    x = 1,320,346,960,560.54/1,072,213.80
  6. Step 6: Final answer
    x = 1,231,421.35

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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.