Home / 1,286,940.64-1,774,514.81-821,167.96

Finding the Fourth Proportional to 1,286,940.64, 1,774,514.81 and 821,167.96

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Solution

The fourth proportional to 1,286,940.64, 1,774,514.81 and 821,167.96 is: 1,132,278.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,286,940.64 : 1,774,514.81 = 821,167.96 : x
  2. Step 2: Convert to fraction form
    1,286,940.64/1,774,514.81 = 821,167.96/x
  3. Step 3: Cross multiply
    1,286,940.64x = 1,774,514.81 × 821,167.96
  4. Step 4: Simplify right side
    1,286,940.64x = 1,457,174,693,539.07
  5. Step 5: Solve for x
    x = 1,457,174,693,539.07/1,286,940.64
  6. Step 6: Final answer
    x = 1,132,278.10

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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.