Home / 1,172,787.05-1,618,435.19-663,489.43

Finding the Fourth Proportional to 1,172,787.05, 1,618,435.19 and 663,489.43

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Solution

The fourth proportional to 1,172,787.05, 1,618,435.19 and 663,489.43 is: 915,609.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,172,787.05 : 1,618,435.19 = 663,489.43 : x
  2. Step 2: Convert to fraction form
    1,172,787.05/1,618,435.19 = 663,489.43/x
  3. Step 3: Cross multiply
    1,172,787.05x = 1,618,435.19 × 663,489.43
  4. Step 4: Simplify right side
    1,172,787.05x = 1,073,814,634,341.51
  5. Step 5: Solve for x
    x = 1,073,814,634,341.51/1,172,787.05
  6. Step 6: Final answer
    x = 915,609.22

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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.